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Create Chemistry Equations and Diagrams in Word

- by Matthew Guay

Microsoft Word is a great tool for formatting text, but what if you want to insert a chemistry formula or diagram? Thanks to a new free add-in for Word, you can now insert high-quality chemistry formulas and diagrams directly from the Ribbon in Word. Microsoft’s new Education Labs has recently released the new Chemistry Add-in for Word 2007 and 2010. This free download adds support for entering and editing chemistry symbols, diagrams, and formulas using the standard XML based Chemical Markup Language. You can convert any chemical name, such as benzene, or formula, such as H2O, into a chemical diagram, standard name, or formula. Whether you’re a professional chemist, just taking chemistry in school, or simply curious about the makeup of Citric Acid, this add-in is an exciting way to bring chemistry to your computer. This add-in works great on Word 2007 and 2010, including the 64 bit version of Word 2010. Please note that the current version is still in beta, so only run it if you are comfortable running beta products. Getting Started Download the Chemistry add-in from Microsoft Education Labs (link below), and unzip the file. Then, run the ChemistryAddinforWordBeta2.Setup.msi. It may inform you that you need to install the Visual Studio Tools for Office 3.0. Simply click Yes to download these tools. This will open the download in your default browser. Simply click run, or save and then run it when it is downloaded. Now, click next to install the Visual Studio Tools for Office as usual. When this is finished, run the ChemistryAddinforWordBeta2.Setup.msi again. This time, you can easily install it with the default options. Once it’s finished installing, open Word to try out the Chemistry Add-in. You will be asked if you want to install this customization, so click Install to enable it. Now you will have a new Chemistry tab in your Word ribbon. Here’s the ribbon in Word 2010… And here it is in Word 2007. Using the Chemistry Add-in It’s very easy to insert nice chemistry diagrams and formulas in Word with the Chemistry add-in. You can quickly insert a premade diagram from the Chemistry Gallery: Or you can insert a formula from file. Simply click “From File” and choose any Chemical Markup Language (.cml) formatted file to insert the chemical formula. You can also convert any chemical name to it’s chemical form. Simply select the word, right-click, select “Convert to Chemistry Zone” and then click on its name. Now you can see the chemical form in the sidebar if you click the Chemistry Navigator button, and can choose to insert the diagram into the document. Some chemicals will automatically convert to the diagram in the document, while others simply link to it in the sidebar. Either way, you can display exactly what you want. You can also convert a chemical formula directly to it’s chemical diagram. Here we entered H2O and converted it to Chemistry Zone: This directly converted it to the diagram directly in the document. You can click the Edit button on the top, and from there choose to either edit the 2D model of the chemical, or edit the labels. When you click Edit Labels, you may be asked which form you wish to display. Here’s the options for potassium permanganate: You can then edit the names and formulas, and add or remove any you wish. If you choose to edit the chemical in 2D, you can even edit the individual atoms and change the chemical you’re diagramming. This 2D editor has a lot of options, so you can get your chemical diagram to look just like you want. And, if you need any help or want to learn more about the Chemistry add-in and its features, simply click the help button in the Chemistry Ribbon. This will open a Word document containing examples and explanations which can be helpful in mastering all the features of this add-in. All of this works perfectly, whether you’re running it in Word 2007 or 2010, 32 or 64 bit editions. Conclusion Whether you’re using chemistry formulas everyday or simply want to investigate a chemical makeup occasionally, this is a great way to do it with tools you already have on your computer. It will also help make homework a bit easier if you’re struggling with it in high school or college. Links Download the Chemistry Add-in for Word Introducing Chemistry Add-in for Word – MSDN blogs Chemistry Markup Language – Wikipedia Similar Articles Productive Geek Tips Geek Reviews: Using Dia as a Free Replacement for Microsoft VisioEasily Summarize A Word 2007 DocumentCreate a Hyperlink in a Word 2007 Flow Chart and Hide Annoying ScreenTipsHow To Create and Publish Blog Posts in Word 2010 & 2007Using Word 2007 as a Blogging Tool TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Windows 7 Easter Theme YoWindoW, a real time weather screensaver Optimize your computer the Microsoft way Stormpulse provides slick, real time weather data Geek Parents – Did you try Parental Controls in Windows 7? 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JavaScript Intellisense with Telerik in ASP.NET Master Page Project with VS 2010

- by Otto Neff

Today I was looking for a solution to get finally the JScript/Javascript/jQuery Intellisense Featureworking with my ASP.Net Webform Project to work. I found some good articles: - JScript IntelliSense Overview- JScript IntelliSense: A Reference for the “Reference” Tag- Enabling JavaScript intellisense in VS.NET 2010 to work with SharePoint 2010- Rich IntelliSense for jQueryBUT, all of suggested solutions did not work right with my Master Page based Visual Studio 2010 Solution.Only with physical Javascript Files (Telerik includes certain Javascript Files like jQuery as Ressource) or/andconfigure always a new ASP.NET Scriptmanager / RadScriptManager on every page derived from the Master Page, wasn't exactly what I was looking for. So I came up with the following simple Solution, to Trick VS2010and still have the Project running with multiple runat="server" Scriptmanagers. In short:- New ASP.NET control derived from ScriptManager with emtpy overwritten OnInit() to use it as emtpy wrapper for VS2010. In detail:New RadScriptManager Classusing System; using System.Collections.Generic; using System.Linq; using System.Web; using Telerik.Web.UI; namespace IntellisenseJavascript.Controls { public class IntelliJS : RadScriptManager { protected override void OnInit(EventArgs e) { } protected override void OnPreRender(EventArgs e) { } protected override void OnLoad(EventArgs e) { } protected override void Render(System.Web.UI.HtmlTextWriter writer) { } public override void RenderControl(System.Web.UI.HtmlTextWriter writer) { } } } web.config<configuration> ... <system.web> ... <pages> <controls> <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4"/> <add tagPrefix="VSFix" namespace="IntellisenseJavascript.Controls" assembly="IntellisenseJavascript"/> </controls> </pages> ... Master Page<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Site.master.cs" Inherits="IntellisenseJavascript.Site" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html > <head id="head" runat="server"> <title></title> <telerik:RadStyleSheetManager ID="radStyleSheetManager" runat="server" /> </head> <body> <form id="form" runat="server"> <telerik:RadScriptManager ID="radScriptManager" runat="server"> <Scripts> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.Core.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.jQuery.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.jQueryInclude.js" /> </Scripts> </telerik:RadScriptManager> <telerik:RadAjaxManager ID="radAjaxManager" runat="server"> </telerik:RadAjaxManager> <div> #MASTER CONTENT# <asp:ContentPlaceHolder ID="contentPlaceHolder" runat="server"> </asp:ContentPlaceHolder> </div> </form> <script type="text/javascript"> $(function () { // Masterpage ready $('body').css('margin', '50px'); }); </script> </body> </html> ASPX Page<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="IntellisenseJavascript.Default" %> <asp:Content ID="Content1" ContentPlaceHolderID="contentPlaceHolder" runat="server"> <VSFix:IntelliJS runat="server" ID="intelliJS"> <Scripts> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.Core.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.jQuery.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" Name="Telerik.Web.UI.Common.jQueryInclude.js" /> </Scripts> </VSFix:IntelliJS> <div style="border: 5px solid #FF9900;"> #PAGE CONTENT# </div> <script type="text/javascript"> $(function () { // Page ready $('body').css('border', '5px solid #888'); }); </script> </asp:Content> The Result I know, this is not the way it meant to be... but now at least you can have a Main ScriptManager for all Common Scripts and Settings, inject page specific Javascripts in PageLoad Event in normal ASPX Files and have JavaScript Intellisense for defined Scripts from JS Files or Assembly Ressouce in your Content Maybe, vNext will fix this.

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Formal Languages, Inductive Proofs & Regular Expressions

- by MarkPearl

So I am slogging away at my UNISA stuff. I have just finished doing the initial once non stop read through the first 11 chapters of my COS 201 Textbook - “Introduction to Computer Theory 2nd Edition” by Daniel Cohen. It has been an interesting couple of days, with familiar concepts coming up as well as some new territory. In this posting I am going to cover the first couple of chapters of the book. Let start with Formal Languages… What exactly is a formal language? Pretty much a no duh question for me but still a good one to ask – a formal language is a language that is defined in a precise mathematical way. Does that mean that the English language is a formal language? I would say no – and my main motivation for this is that one can have an English sentence that is correct grammatically that is also ambiguous. For example the ambiguous sentence: "I once shot an elephant in my pyjamas.” For this and possibly many other reasons that I am unaware of, English is termed a “Natural Language”. So why the importance of formal languages in computer science? Again a no duh question in my mind… If we want computers to be effective and useful tools then we need them to be able to evaluate a series of commands in some form of language that when interpreted by the device no confusion will exist as to what we were requesting. Imagine the mayhem that would exist if a computer misinterpreted a command to print a document and instead decided to delete it. So what is a Formal Language made up of… For my study purposes a language is made up of a finite alphabet. For a formal language to exist there needs to be a specification on the language that will describe whether a string of characters has membership in the language or not. There are two basic ways to do this: By a “machine” that will recognize strings of the language (e.g. Finite Automata). By a rule that describes how strings of a language can be formed (e.g. Regular Expressions). When we use the phrase “string of characters”, we can also be referring to a “word”. What is an Inductive Proof? So I am not to far into my textbook and of course it starts referring to proofs and different types. I have had to go through several different approaches of proofs in the past, but I can never remember their formal names , so when I saw “inductive proof” I thought to myself – what the heck is that? Google to the rescue… An inductive proof is like a normal proof but it employs a neat trick which allows you to prove a statement about an arbitrary number n by first proving it is true when n is 1 and then assuming it is true for n=k and showing it is true for n=k+1. The idea is that if you want to show that someone can climb to the nth floor of a fire escape, you need only show that you can climb the ladder up to the fire escape (n=1) and then show that you know how to climb the stairs from any level of the fire escape (n=k) to the next level (n=k+1). Does this sound like a form of recursion? No surprise then that in the same chapter they deal with recursive definitions. An example of a recursive definition for the language EVEN would the 3 rules below: 2 is in EVEN If x is in EVEN then so is x+2 The only elements in the set EVEN are those that be produced by the rules above. Nothing to exciting… So if a definition for a language is done recursively, then it makes sense that the language can be proved using induction. Regular Expressions So I am wondering to myself what use is this all – in fact – I find this the biggest challenge to any university material is that it is quite hard to find the immediate practical applications of some theory in real life stuff. How great was my joy when I suddenly saw the word regular expression being introduced. I had been introduced to regular expressions on Stack Overflow where I was trying to recognize if some text measurement put in by a user was in a valid form or not. For instance, the imperial system of measurement where you have feet and inches can be represented in so many different ways. I had eventually turned to regular expressions as an easy way to check if my parser could correctly parse the text or not and convert it to a normalize measurement. So some rules about languages and regular expressions… Any finite language can be represented by at least one if not more regular expressions A regular expressions is almost a rule syntax for expressing how regular languages can be formed regular expressions are cool For a regular expression to be valid for a language it must be able to generate all the words in the language and no other words. This is important. It doesn’t help me if my regular expression parses 100% of my measurement texts but also lets one or two invalid texts to pass as well. Okay, so this posting jumps around a bit – but introduces some very basic fundamentals for the subject which will be built on in later postings… Time to go and do some practical examples now…

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Integrate Microsoft Translator into your ASP.Net application

- by sreejukg

In this article I am going to explain how easily you can integrate the Microsoft translator API to your ASP.Net application. Why we need a translation API? Once you published a website, you are opening a channel to the global audience. So making the web content available only in one language doesn’t cover all your audience. Especially when you are offering products/services it is important to provide contents in multiple languages. Users will be more comfortable when they see the content in their native language. How to achieve this, hiring translators and translate the content to all your user’s languages will cost you lot of money, and it is not a one time job, you need to translate the contents on the go. What is the alternative, we need to look for machine translation. Thankfully there are some translator engines available that gives you API level access, so that automatically you can translate the content and display to the user. Microsoft Translator API is an excellent set of web service APIs that allows developers to use the machine translation technology in their own applications. The Microsoft Translator API is offered through Windows Azure market place. In order to access the data services published in Windows Azure market place, you need to have an account. The registration process is simple, and it is common for all the services offered through the market place. Last year I had written an article about Bing Search API, where I covered the registration process. You can refer the article here. http://weblogs.asp.net/sreejukg/archive/2012/07/04/integrate-bing-search-api-to-asp-net-application.aspx Once you registered with Windows market place, you will get your APP ID. Now you can visit the Microsoft Translator page and click on the sign up button. http://datamarket.azure.com/dataset/bing/microsofttranslator As you can see, there are several options available for you to subscribe. There is a free version available, great. Click on the sign up button under the package that suits you. Clicking on the sign up button will bring the sign up form, where you need to agree on the terms and conditions and go ahead. You need to have a windows live account in order to sign up for any service available in Windows Azure market place. Once you signed up successfully, you will receive the thank you page. You can download the C# class library from here so that the integration can be made without writing much code. The C# file name is TranslatorContainer.cs. At any point of time, you can visit https://datamarket.azure.com/account/datasets to see the applications you are subscribed to. Click on the Use link next to each service will give you the details of the application. You need to not the primary account key and URL of the service to use in your application. Now let us start our ASP.Net project. I have created an empty ASP.Net web application using Visual Studio 2010 and named it Translator Sample, any name could work. By default, the web application in solution explorer looks as follows. Now right click the project and select Add -> Existing Item and then browse to the TranslatorContainer.cs. Now let us create a page where user enter some data and perform the translation. I have added a new web form to the project with name Translate.aspx. I have placed one textbox control for user to type the text to translate, the dropdown list to select the target language, a label to display the translated text and a button to perform the translation. For the dropdown list I have selected some languages supported by Microsoft translator. You can get all the supported languages with their codes from the below link. http://msdn.microsoft.com/en-us/library/hh456380.aspx The form looks as below in the design surface of Visual Studio. All the class libraries in the windows market place requires reference to System.Data.Services.Client, let us add the reference. You can find the documentation of how to use the downloaded class library from the below link. http://msdn.microsoft.com/en-us/library/gg312154.aspx Let us evaluate the translatorContainer.cs file. You can refer the code and it is self-explanatory. Note the namespace name used (Microsoft), you need to add the namespace reference to your page. I have added the following event for the translate button. The code is self-explanatory. You are creating an object of TranslatorContainer class by passing the translation service URL. Now you need to set credentials for your Translator container object, which will be your account key. The TranslatorContainer support a method that accept a text input, source language and destination language and returns DataServiceQuery<Translation>. Let us see this working, I just ran the application and entered Good Morning in the Textbox. Selected target language and see the output as follows. It is easy to build great translator applications using Microsoft translator API, and there is a reasonable amount of translation you can perform in your application for free. For enterprises, you can subscribe to the appropriate package and make your application multi-lingual.

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Building InstallShield based Installers using Team Build 2010

- by jehan

Last few weeks, I have been working on Application Packaging stuff using all the widely used tools like InstallShield, WISE, WiX and Visual Studio Installer. So, I thought it would be good to post about how to Build the Installers developed using these tools with Team Build 2010. This post will focus on how to build the InstallShield generated packages using Team Build 2010. For the release of VS2010, Microsoft has partnered with Flexera who are the makers of InstallShield to create InstallShield Limited Edition, especially for the customers of Visual Studio. First Microsoft planned to release WiX (Windows Installer Xml) with VS2010, but later Microsoft dropped WiX from VS2010 due to reasons which are best known to them and partnered with InstallShield for Limited Edition. It disappointed lot of people because InstallShield Limited Edition provides only few features of InstallShield and it may not feasable to build complex installer packages using this and it also requires License, where as WiX is an open source with no license costs and it has proved efficient in building most complex packages. Only the last three features are available in InstallShield Limited Edition from the total features offered by InstallShield as shown in below list. Feature Limited Edition for Visual Studio 2010 Standalone Build System Maintain a clean build machine by using only the part of InstallShield that compiles the installations. InstallShield Best Practices Validation Suite Avoid common installation issues. Try and Die Functionality RCreate a fully functional trial version of your product. InstallShield Repackager Create Windows Installer setups from any legacy installation. Multilingual Support Present installation text in up to 35 languages. Microsoft App-V™ Support Deploy your applications as App-V virtual packages that run without conflict. Industry-Standard InstallScript Achieve maximum flexibility in your installations. Dialog Editor Modify the layout of existing end-user dialogs, create new custom dialogs, and more. Patch Creation Build updates and patches for your products. Setup Prerequisite Editor Easily control prerequisite restart behavior and source locations. String Editor View Control the localizable text strings displayed at run time with this spreadsheet-like table. Text File Changes View Configure search-and-replace actions for content in text files to be modified at run time. Virtual Machine Detection Block your installations from running on virtual machines. Unicode Support Improve multi-language installation development. Support for 64-Bit COM Extraction Extract COM data from a 64-bit COM server. Windows Installer Installation Chaining Add MSI packages to your main installation and chain them together. XML Support Save time by quickly testing XML configuration changes to installation projects. Billboard Support for Custom Branding Display Adobe Flash billboards and other graphic files during the install process. SaaS Support (IIS 7 and SSL Technologies) Easily deploy Windows-based Web applications. Project Assistant Jumpstart a project by using a simplified set of views. Support for Digital Signatures Save time by digitally signing all your files at build time. Easily Run Custom Actions Schedule a custom action to run at precisely the right moment in your installation. Installation Prerequisites Check for and install prerequisites before your installation is executed. To create a InstallShield project in Visual Studio and Build it using Team Build 2010, first you have to add the InstallShield Project template to your Solution file. If you want to use InstallShield Limited edition you can add it from FileàNewà project àother Project Types àSetup and Deploymentà InstallShield LE and if you are using other versions of InstallShield, then you have to add it from from FileàNewà project àInstallShield Projects. Here, I’m using InstallShield 2011 Premier edition as I already have it Installed. I have created a simple package for TailSpin Application which has a Feature called Web, few components and a IIS Web Site for TailSpin application. Before started working on this, I thought I may need to build the package by calling invoke process activity in build process template or have to create a new custom activity. But, it got build without any changes to build process template. But, it was failing with below error message. C:\Program Files (x86)\MSBuild\InstallShield\2011\InstallShield.targets (68): The "InstallShield.Tasks.InstallShield" task could not be loaded from the assembly C:\Program Files (x86)\MSBuild\InstallShield\2010Limited\InstallShield.Tasks.dll. Could not load file or assembly 'file:///C:\Program Files(x86)\MSBuild\InstallShield\2011\InstallShield.Tasks.dll' or one of its dependencies. An attempt was made to load a program with an incorrect format. Confirm that the <UsingTask> declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask. This error is due to 64-bit build machine which I’m using. This issue will be replicable if you are queuing a build on a 64-bit build machine. To avoid this you have to ensure that you configured the build definition for your InstallShield project to load the InstallShield.Tasks.dll file (which is a 32-bit file); otherwise, you will encounter this build error informing you that the InstallShield.Tasks.dll file could not be loaded. To select the 32-bit version of MSBuild, click the Process tab of your build definition in Team Explorer. Then, under the Advanced node, find the MSBuild Platform setting, and select x86. Note that if you are using a 32-bit build machine, you can select either Auto or x86 for the MSBuild Platform setting. Once I did above changes, the build got successful.

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Changing enum in a different class for screen

- by user2434321

I'm trying to make a start menu for my game and my code uses Enum's to moniter the screen state. Now i want to change the screenstate declared in the main class, in my Background class Screen screen = new Screen(); is declared in the Game1 class Background(ref screen); This is in the update method for the Background Class KeyboardState keystate = Keyboard.GetState(); switch (screen) { case Screen.Start: if (isPressed && keystate.IsKeyUp(Keys.Up) && keystate.IsKeyUp(Keys.Down) && keystate.IsKeyUp(Keys.Enter)) { isPressed = false; } if (keystate.IsKeyDown(Keys.Down) && isPressed != true) { if (menuState == MenuState.Options) menuState = MenuState.Credits; if (menuState == MenuState.Play) menuState = MenuState.Options; isPressed = true; } if (keystate.IsKeyDown(Keys.Up) && isPressed != true) { if (menuState == MenuState.Options) menuState = MenuState.Play; if (menuState == MenuState.Credits) menuState = MenuState.Options; isPressed = true; } switch (menuState) { case MenuState.Play: arrowRect.X = 450; arrowRect.Y = 220; if (keystate.IsKeyDown(Keys.Enter) && isPressed != true) screen = Screen.Play; break; case MenuState.Options: arrowRect.X = 419; arrowRect.Y = 340; if (keystate.IsKeyDown(Keys.Enter) && isPressed != true) screen = Screen.Options; break; case MenuState.Credits: arrowRect.X = 425; arrowRect.Y = 460; if (keystate.IsKeyDown(Keys.Enter) && isPressed != true) screen = Screen.Credits; break; } break; } } For some reason when I play this and I hit the enter button the Background class's screen is changed but the main class's screen isn't how can i change this? EDIT 1* class Background { private Texture2D background; private Rectangle backgroundRect; private Texture2D arrow; private Rectangle arrowRect; private Screen screen; private MenuState menuState; private bool isPressed = false; public Screen getScreenState(ref Screen screen) { this.screen = screen; return this.screen; } public Background(ref Screen screen) { this.screen = screen; } public void Update() { KeyboardState keystate = Keyboard.GetState(); switch (screen) { case Screen.Start: if (isPressed && keystate.IsKeyUp(Keys.Up) && keystate.IsKeyUp(Keys.Down) && keystate.IsKeyUp(Keys.Enter)) { isPressed = false; } if (keystate.IsKeyDown(Keys.Down) && isPressed != true) { if (menuState == MenuState.Options) menuState = MenuState.Credits; if (menuState == MenuState.Play) menuState = MenuState.Options; isPressed = true; } if (keystate.IsKeyDown(Keys.Up) && isPressed != true) { if (menuState == MenuState.Options) menuState = MenuState.Play; if (menuState == MenuState.Credits) menuState = MenuState.Options; isPressed = true; } switch (menuState) { case MenuState.Play: arrowRect.X = 450; arrowRect.Y = 220; if (keystate.IsKeyDown(Keys.Enter) && isPressed != true) screen = Screen.Play; break; case MenuState.Options: arrowRect.X = 419; arrowRect.Y = 340; if (keystate.IsKeyDown(Keys.Enter) && isPressed != true) screen = Screen.Options; break; case MenuState.Credits: arrowRect.X = 425; arrowRect.Y = 460; if (keystate.IsKeyDown(Keys.Enter) && isPressed != true) screen = Screen.Credits; break; } break; case Screen.Pause: break; case Screen.Over: break; } } public void LoadStartContent(ContentManager Content, GraphicsDeviceManager graphics) { background = Content.Load<Texture2D>("startBackground"); arrow = Content.Load<Texture2D>("arrow"); backgroundRect = new Rectangle(0, 0, graphics.GraphicsDevice.Viewport.Width, graphics.GraphicsDevice.Viewport.Height); arrowRect = new Rectangle(450, 225, arrow.Width, arrow.Height); screen = Screen.Start; } public void LoadPlayContent(ContentManager Content, GraphicsDeviceManager graphics) { background = Content.Load<Texture2D>("Background"); backgroundRect = new Rectangle(0, 0, graphics.GraphicsDevice.Viewport.Width, graphics.GraphicsDevice.Viewport.Height); screen = Screen.Play; } public void LoadOverContent(ContentManager Content, GraphicsDeviceManager graphics) { } public void Draw(SpriteBatch spritebatch) { if (screen == Screen.Start) { spritebatch.Draw(background, backgroundRect, Color.White); spritebatch.Draw(arrow, arrowRect, Color.White); } else spritebatch.Draw(background, backgroundRect, Color.White); } } Thats my background class!

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Event Logging in LINQ C# .NET

The first thing you'll want to do before using this code is to create a table in your database called TableHistory: CREATE TABLE [dbo].[TableHistory] ( [TableHistoryID] [int] IDENTITY NOT NULL , [TableName] [varchar] (50) NOT NULL , [Key1] [varchar] (50) NOT NULL , [Key2] [varchar] (50) NULL , [Key3] [varchar] (50) NULL , [Key4] [varchar] (50) NULL , [Key5] [varchar] (50) NULL , [Key6] [varchar] (50)NULL , [ActionType] [varchar] (50) NULL , [Property] [varchar] (50) NULL , [OldValue] [varchar] (8000) NULL , [NewValue] [varchar] (8000) NULL , [ActionUserName] [varchar] (50) NOT NULL , [ActionDateTime] [datetime] NOT NULL ) Once you have created the table, you'll need to add it to your custom LINQ class (which I will refer to as DboDataContext), thus creating the TableHistory class. Then, you'll need to add the History.cs file to your project. You'll also want to add the following code to your project to get the system date: public partial class DboDataContext{ [Function(Name = "GetDate", IsComposable = true)] public DateTime GetSystemDate() { MethodInfo mi = MethodBase.GetCurrentMethod() as MethodInfo; return (DateTime)this.ExecuteMethodCall(this, mi, new object[] { }).ReturnValue; }}private static Dictionary<type,> _cachedIL = new Dictionary<type,>();public static T CloneObjectWithIL<t>(T myObject){ Delegate myExec = null; if (!_cachedIL.TryGetValue(typeof(T), out myExec)) { // Create ILGenerator DynamicMethod dymMethod = new DynamicMethod("DoClone", typeof(T), new Type[] { typeof(T) }, true); ConstructorInfo cInfo = myObject.GetType().GetConstructor(new Type[] { }); ILGenerator generator = dymMethod.GetILGenerator(); LocalBuilder lbf = generator.DeclareLocal(typeof(T)); //lbf.SetLocalSymInfo("_temp"); generator.Emit(OpCodes.Newobj, cInfo); generator.Emit(OpCodes.Stloc_0); foreach (FieldInfo field in myObject.GetType().GetFields( System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic)) { // Load the new object on the eval stack... (currently 1 item on eval stack) generator.Emit(OpCodes.Ldloc_0); // Load initial object (parameter) (currently 2 items on eval stack) generator.Emit(OpCodes.Ldarg_0); // Replace value by field value (still currently 2 items on eval stack) generator.Emit(OpCodes.Ldfld, field); // Store the value of the top on the eval stack into // the object underneath that value on the value stack. // (0 items on eval stack) generator.Emit(OpCodes.Stfld, field); } // Load new constructed obj on eval stack -> 1 item on stack generator.Emit(OpCodes.Ldloc_0); // Return constructed object. --> 0 items on stack generator.Emit(OpCodes.Ret); myExec = dymMethod.CreateDelegate(typeof(Func<t,>)); _cachedIL.Add(typeof(T), myExec); } return ((Func<t,>)myExec)(myObject);}I got both of the above methods off of the net somewhere (maybe even from CodeProject), but it's been long enough that I can't recall where I got them.Explanation of the History ClassThe History class records changes by creating a TableHistory record, inserting the values for the primary key for the table being modified into the Key1, Key2, ..., Key6 columns (if you have more than 6 values that make up a primary key on any table, you'll want to modify this), setting the type of change being made in the ActionType column (INSERT, UPDATE, or DELETE), old value and new value if it happens to be an update action, and the date and Windows identity of the user who made the change.Let's examine what happens when a call is made to the RecordLinqInsert method:public static void RecordLinqInsert(DboDataContext dbo, IIdentity user, object obj){ TableHistory hist = NewHistoryRecord(obj); hist.ActionType = "INSERT"; hist.ActionUserName = user.Name; hist.ActionDateTime = dbo.GetSystemDate(); dbo.TableHistories.InsertOnSubmit(hist);}private static TableHistory NewHistoryRecord(object obj){ TableHistory hist = new TableHistory(); Type type = obj.GetType(); PropertyInfo[] keys; if (historyRecordExceptions.ContainsKey(type)) { keys = historyRecordExceptions[type].ToArray(); } else { keys = type.GetProperties().Where(o => AttrIsPrimaryKey(o)).ToArray(); } if (keys.Length > KeyMax) throw new HistoryException("object has more than " + KeyMax.ToString() + " keys."); for (int i = 1; i <= keys.Length; i++) { typeof(TableHistory) .GetProperty("Key" + i.ToString()) .SetValue(hist, keys[i - 1].GetValue(obj, null).ToString(), null); } hist.TableName = type.Name; return hist;}protected static bool AttrIsPrimaryKey(PropertyInfo pi){ var attrs = from attr in pi.GetCustomAttributes(typeof(ColumnAttribute), true) where ((ColumnAttribute)attr).IsPrimaryKey select attr; if (attrs != null && attrs.Count() > 0) return true; else return false;}RecordLinqInsert takes as input a data context which it will use to write to the database, the user, and the LINQ object to be recorded (a single object, for instance, a Customer or Order object if you're using AdventureWorks). It then calls the NewHistoryRecord method, which uses LINQ to Objects in conjunction with the AttrIsPrimaryKey method to pull all the primary key properties, set the Key1-KeyN properties of the TableHistory object, and return the new TableHistory object. The code would be called in an application, like so: Continue span.fullpost {display:none;}

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Code Structure / Level Design: Plants vs Zombies game level dissection

- by lalan

Hi Friends, I am interested in learning the class structure of Plants vs Zombies, particularly level design; for those who haven't played it - this video contains nice play-through: http://www.youtube.com/watch?v=89DfdOIJ4xw. How would I go ahead and design the code, mostly structure & classes, which allows for maximum flexibility & clean development? I am familiar with data driven design concepts, and would use events to handle most of dynamic behavior. Dissection at macro level: (Once every Level) Load tilemap, props, etc -- basically build the map (Once every Level) Camera Movement - might consider it as short cut-scene (Once every Level) Show Enemies you'll face during present level (Once every Level) Unit Selection Window/Panel - selection of defensive plants (Once every Level) Camera Movement - might consider it as short cut-scene (Once every Level) HUD Creation - based on unit selection (Level Loop) Enemy creation - based on types of zombies allowed (Level Loop) Sun/Resource generation (Level Loop) Show messages like 'huge wave of zombies coming', 'final wave' (Level Loop) Other unique events - Spawn gifts, money, tombstones, etc (Once every Level) Unlock new plant Potential game scripts: a) Level definitions: Level_1_1.xml, Level_1_2.xml, etc. Level_1_1.xml :: Sample script <map> <tilemap>tilemapFrontLawn</tilemap> <SpawnPoints> tiles where particular type of zombies (land vs water) may spawn</spawnPoints> <props> position, entity array -- lawnmower, </props> </map> <zombies> <... list of zombies who gonna attack by ids...> </zombies> <plants> <... list by plants which are available for defense by ids...> </plants> <progression> <ZombieWave name='first wave' spawnScript='zombieLightWave.lua' unlock='null'> <startMessages time=1.5>Ready</startMessages> <endMessages time=1.5>Huge wave of zombies incoming</endMessages> </ZombieWave> </progression> b) Entities definitions: .xmls containing zombies, plants, sun, lawnmower, coins, etc description. Potential classes: //LevelManager - Based on the level under play, it will load level script. Few of the // functions it may have: class LevelManager { public: bool load(string levelFileName); bool enter(); bool update(float deltatime); bool exit(); private: LevelData* mLevelData; } // LevelData - Contains the details of level loaded by LevelManager. class LevelData { private: string file; // array of camera,dialog,attackwaves, etc in active level LevelCutSceneCamera** mArrayCutSceneCamera; LevelCutSceneDialog** mArrayCutSceneDialog; LevelAttackWave** mArrayAttackWave; .... // which camera,dialog,attackwave is active in level uint mCursorCutSceneCamera; uint mCursorCutSceneDialog; uint mCursorAttackWave; public: // based on cursor, get the next camera,dialog,attackwave,etc in active level // return false/true based on failure/success bool nextCutSceneCamera(LevelCutSceneCamera**); bool nextCutSceneDialog(LevelCutSceneDialog**); } // LevelUnderPlay- LevelManager class LevelUnderPlay { private: LevelCutSceneCamera* mCutSceneCamera; LevelCutSceneDialog* mCutSceneDialog; LevelAttackWave* mAttackWave; Entities** mSelectedPlants; Entities** mAllowedZombies; bool isCutSceneCameraActive; public: bool enter(); bool update(float deltatime); bool exit(); } I am totally confused.. :( Does it make sense of using class composition (have flat class hierarchy) for managing levels. Is it a good idea to just add/remove/update sprites (or any drawable stuff) to current scene from LevelManager or LevelUnderPlay? If I want to make non-linear level design, how should I go ahead? Perhaps I would need a LevelProgression class, which would decide what to do based on decision tree. Any suggestions would be appreciated very much. Thank for your time, lalan

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Server Controls in ASP.NET MVC without ViewState

- by imran_ku07

Introduction : ASP.NET Web Forms provides a development environment just like GUI or windows application and try to hide statelessness nature of HTTP protocol. For accomplishing this target, Web Forms uses ViewState (a hidden field) to remove the gap between HTTP statelessness and GUI applications. But the problem with this technique is that ViewState size which grows quickly and also go back and forth with every request, as a result it will degrade application performance. In this article i will try to use existing ASP.NET server controls without ViewState. Description : When you add a server control which needs viewstate, in the presentation view in ASP.NET MVC application without a form tag, for example, <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> It will shows the following exception, Control 'TextBox1' of type 'TextBox' must be placed inside a form tag with runat=server When you place this textbox inside a form tag with runat=server, this will add the following ViewState even when you disable ViewState by using EnableViewState="false" <input type="hidden" value="/wEPDwUJMjgzMDgzOTgzZGQ6u9CwikhHEW39ObrHyLTPFSboPA==" id="__VIEWSTATE" name="__VIEWSTATE"/> The solution to this problem is to use the RenderControl method of server control which is simply renders HTML without any ViewState hidden field. <% TextBox txt = new TextBox(); txt.Text = "abc"; StringBuilder sb = new StringBuilder(); System.IO.StringWriter textwriter = new System.IO.StringWriter(sb); HtmlTextWriter htmlwriter = new HtmlTextWriter(textwriter); txt.RenderControl(htmlwriter); %> <%= sb.ToString() %> This will render <input type="text" > without any View State. This technique become very useful when you are using rich server controls like GridView. For example, let's say you have List of Recalls in Model.Recalls, then you will show your tabular data as, <% GridView gv = new GridView(); gv.AutoGenerateColumns = true; gv.DataSource = Model.Recalls; gv.DataBind(); StringBuilder sb = new StringBuilder(); System.IO.StringWriter textwriter = new System.IO.StringWriter(sb); HtmlTextWriter htmlwriter = new HtmlTextWriter(textwriter); gv.RenderControl(htmlwriter);%> <%= sb.ToString() %> This code might looks odd in your presentation view. A more better approach is to create a HTML Helper method which contains the above code. Summary : In some cases you might needs to use existing ASP.NET Web Forms server controls but also dislikes ViewState. In this article i try to solve this gap by using the RenderControl method of Control class. Hopefully you enjoyed and become ready to create HTML helpers for many of the existing server controls.

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.NET Security Part 2

- by Simon Cooper

So, how do you create partial-trust appdomains? Where do you come across them? There are two main situations in which your assembly runs as partially-trusted using the Microsoft .NET stack: Creating a CLR assembly in SQL Server with anything other than the UNSAFE permission set. The permissions available in each permission set are given here. Loading an assembly in ASP.NET in any trust level other than Full. Information on ASP.NET trust levels can be found here. You can configure the specific permissions available to assemblies using ASP.NET policy files. Alternatively, you can create your own partially-trusted appdomain in code and directly control the permissions and the full-trust API available to the assemblies you load into the appdomain. This is the scenario I’ll be concentrating on in this post. Creating a partially-trusted appdomain There is a single overload of AppDomain.CreateDomain that allows you to specify the permissions granted to assemblies in that appdomain – this one. This is the only call that allows you to specify a PermissionSet for the domain. All the other calls simply use the permissions of the calling code. If the permissions are restricted, then the resulting appdomain is referred to as a sandboxed domain. There are three things you need to create a sandboxed domain: The specific permissions granted to all assemblies in the domain. The application base (aka working directory) of the domain. The list of assemblies that have full-trust if they are loaded into the sandboxed domain. The third item is what allows us to have a fully-trusted API that is callable by partially-trusted code. I’ll be looking at the details of this in a later post. Granting permissions to the appdomain Firstly, the permissions granted to the appdomain. This is encapsulated in a PermissionSet object, initialized either with no permissions or full-trust permissions. For sandboxed appdomains, the PermissionSet is initialized with no permissions, then you add permissions you want assemblies loaded into that appdomain to have by default: PermissionSet restrictedPerms = new PermissionSet(PermissionState.None); // all assemblies need Execution permission to run at all restrictedPerms.AddPermission( new SecurityPermission(SecurityPermissionFlag.Execution)); // grant general read access to C:\config.xml restrictedPerms.AddPermission( new FileIOPermission(FileIOPermissionAccess.Read, @"C:\config.xml")); // grant permission to perform DNS lookups restrictedPerms.AddPermission( new DnsPermission(PermissionState.Unrestricted)); It’s important to point out that the permissions granted to an appdomain, and so to all assemblies loaded into that appdomain, are usable without needing to go through any SafeCritical code (see my last post if you’re unsure what SafeCritical code is). That is, partially-trusted code loaded into an appdomain with the above permissions (and so running under the Transparent security level) is able to create and manipulate a FileStream object to read from C:\config.xml directly. It is only for operations requiring permissions that are not granted to the appdomain that partially-trusted code is required to call a SafeCritical method that then asserts the missing permissions and performs the operation safely on behalf of the partially-trusted code. The application base of the domain This is simply set as a property on an AppDomainSetup object, and is used as the default directory assemblies are loaded from: AppDomainSetup appDomainSetup = new AppDomainSetup { ApplicationBase = @"C:\temp\sandbox", }; If you’ve read the documentation around sandboxed appdomains, you’ll notice that it mentions a security hole if this parameter is set correctly. I’ll be looking at this, and other pitfalls, that will break the sandbox when using sandboxed appdomains, in a later post. Full-trust assemblies in the appdomain Finally, we need the strong names of the assemblies that, when loaded into the appdomain, will be run as full-trust, irregardless of the permissions specified on the appdomain. These assemblies will contain methods and classes decorated with SafeCritical and Critical attributes. I’ll be covering the details of creating full-trust APIs for partial-trust appdomains in a later post. This is how you get the strongnames of an assembly to be executed as full-trust in the sandbox: // get the Assembly object for the assembly Assembly assemblyWithApi = ... // get the StrongName from the assembly's collection of evidence StrongName apiStrongName = assemblyWithApi.Evidence.GetHostEvidence<StrongName>(); Creating the sandboxed appdomain So, putting these three together, you create the appdomain like so: AppDomain sandbox = AppDomain.CreateDomain( "Sandbox", null, appDomainSetup, restrictedPerms, apiStrongName); You can then load and execute assemblies in this appdomain like any other. For example, to load an assembly into the appdomain and get an instance of the Sandboxed.Entrypoint class, implementing IEntrypoint, you do this: IEntrypoint o = (IEntrypoint)sandbox.CreateInstanceFromAndUnwrap( "C:\temp\sandbox\SandboxedAssembly.dll", "Sandboxed.Entrypoint"); // call method the Execute method on this object within the sandbox o.Execute(); The second parameter to CreateDomain is for security evidence used in the appdomain. This was a feature of the .NET 2 security model, and has been (mostly) obsoleted in the .NET 4 model. Unless the evidence is needed elsewhere (eg. isolated storage), you can pass in null for this parameter. Conclusion That’s the basics of sandboxed appdomains. The most important object is the PermissionSet that defines the permissions available to assemblies running in the appdomain; it is this object that defines the appdomain as full or partial-trust. The appdomain also needs a default directory used for assembly lookups as the ApplicationBase parameter, and you can specify an optional list of the strongnames of assemblies that will be given full-trust permissions if they are loaded into the sandboxed appdomain. Next time, I’ll be looking closer at full-trust assemblies running in a sandboxed appdomain, and what you need to do to make an API available to partial-trust code.

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Talend Enterprise Data Integration overperforms on Oracle SPARC T4

- by Amir Javanshir

The SPARC T microprocessor, released in 2005 by Sun Microsystems, and now continued at Oracle, has a good track record in parallel execution and multi-threaded performance. However it was less suited for pure single-threaded workloads. The new SPARC T4 processor is now filling that gap by offering a 5x better single-thread performance over previous generations. Following our long-term relationship with Talend, a fast growing ISV positioned by Gartner in the “Visionaries” quadrant of the “Magic Quadrant for Data Integration Tools”, we decided to test some of their integration components with the T4 chip, more precisely on a T4-1 system, in order to verify first hand if this new processor stands up to its promises. Several tests were performed, mainly focused on: Single-thread performance of the new SPARC T4 processor compared to an older SPARC T2+ processor Overall throughput of the SPARC T4-1 server using multiple threads The tests consisted in reading large amounts of data --ten's of gigabytes--, processing and writing them back to a file or an Oracle 11gR2 database table. They are CPU, memory and IO bound tests. Given the main focus of this project --CPU performance--, bottlenecks were removed as much as possible on the memory and IO sub-systems. When possible, the data to process was put into the ZFS filesystem cache, for instance. Also, two external storage devices were directly attached to the servers under test, each one divided in two ZFS pools for read and write operations. Multi-thread: Testing throughput on the Oracle T4-1 The tests were performed with different number of simultaneous threads (1, 2, 4, 8, 12, 16, 32, 48 and 64) and using different storage devices: Flash, Fibre Channel storage, two stripped internal disks and one single internal disk. All storage devices used ZFS as filesystem and volume management. Each thread read a dedicated 1GB-large file containing 12.5M lines with the following structure: customerID;FirstName;LastName;StreetAddress;City;State;Zip;Cust_Status;Since_DT;Status_DT 1;Ronald;Reagan;South Highway;Santa Fe;Montana;98756;A;04-06-2006;09-08-2008 2;Theodore;Roosevelt;Timberlane Drive;Columbus;Louisiana;75677;A;10-05-2009;27-05-2008 3;Andrew;Madison;S Rustle St;Santa Fe;Arkansas;75677;A;29-04-2005;09-02-2008 4;Dwight;Adams;South Roosevelt Drive;Baton Rouge;Vermont;75677;A;15-02-2004;26-01-2007 […] The following graphs present the results of our tests: Unsurprisingly up to 16 threads, all files fit in the ZFS cache a.k.a L2ARC : once the cache is hot there is no performance difference depending on the underlying storage. From 16 threads upwards however, it is clear that IO becomes a bottleneck, having a good IO subsystem is thus key. Single-disk performance collapses whereas the Sun F5100 and ST6180 arrays allow the T4-1 to scale quite seamlessly. From 32 to 64 threads, the performance is almost constant with just a slow decline. For the database load tests, only the best IO configuration --using external storage devices-- were used, hosting the Oracle table spaces and redo log files. Using the Sun Storage F5100 array allows the T4-1 server to scale up to 48 parallel JVM processes before saturating the CPU. The final result is a staggering 646K lines per second insertion in an Oracle table using 48 parallel threads. Single-thread: Testing the single thread performance Seven different tests were performed on both servers. Given the fact that only one thread, thus one file was read, no IO bottleneck was involved, all data being served from the ZFS cache. Read File ? Filter ? Write File: Read file, filter data, write the filtered data in a new file. The filter is set on the “Status” column: only lines with status set to “A” are selected. This limits each output file to about 500 MB. Read File ? Load Database Table: Read file, insert into a single Oracle table. Average: Read file, compute the average of a numeric column, write the result in a new file. Division & Square Root: Read file, perform a division and square root on a numeric column, write the result data in a new file. Oracle DB Dump: Dump the content of an Oracle table (12.5M rows) into a CSV file. Transform: Read file, transform, write the result data in a new file. The transformations applied are: set the address column to upper case and add an extra column at the end, which is the concatenation of two columns. Sort: Read file, sort a numeric and alpha numeric column, write the result data in a new file. The following table and graph present the final results of the tests: Throughput unit is thousand lines per second processed (K lines/second). Improvement is the % of improvement between the T5140 and T4-1. Test T4-1 (Time s.) T5140 (Time s.) Improvement T4-1 (Throughput) T5140 (Throughput) Read/Filter/Write 125 806 645% 100 16 Read/Load Database 195 1111 570% 64 11 Average 96 557 580% 130 22 Division & Square Root 161 1054 655% 78 12 Oracle DB Dump 164 945 576% 76 13 Transform 159 1124 707% 79 11 Sort 251 1336 532% 50 9 The improvement of single-thread performance is quite dramatic: depending on the tests, the T4 is between 5.4 to 7 times faster than the T2+. It seems clear that the SPARC T4 processor has gone a long way filling the gap in single-thread performance, without sacrifying the multi-threaded capability as it still shows a very impressive scaling on heavy-duty multi-threaded jobs. Finally, as always at Oracle ISV Engineering, we are happy to help our ISV partners test their own applications on our platforms, so don't hesitate to contact us and let's see what the SPARC T4-based systems can do for your application! "As describe in this benchmark, Talend Enterprise Data Integration has overperformed on T4. I was generally happy to see that the T4 gave scaling opportunities for many scenarios like complex aggregations. Row by row insertion in Oracle DB is faster with more than 650,000 rows per seconds without using any bulk Oracle capabilities !" Cedric Carbone, Talend CTO.

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libgdx rotation (animation, arrays) issues and help needed

- by johnny-b

well i am a noob at java and libgdx. i got the homing bullet working with the help of someone. now i am smashing my head as to how i can make it rotate so it faces the ball (which is the main character) when it goes around it or when it is coming towards it. the bullet is facing <--- and the code below is what i have done so far. also i used sprites for the bullet and also animation method. Also how do i make it an array/arraylist which is best so i can have multiple bullets at random or placed places. i tried many things nothing workd :( thank you for the help. // below is the bullet or enemy if you want to call it. public class Bullet extends Sprite { public static final float BULLET_HOMING = 6000; public static final float BULLET_SPEED = 300; private Vector2 velocity; private float lifetime; public Bullet(float x, float y) { velocity = new Vector2(0, 0); setPosition(x, y); } public void update(float delta) { float targetX = GameWorld.getBall().getX(); float targetY = GameWorld.getBall().getY(); float dx = targetX - getX(); float dy = targetY - getY(); float distToTarget = (float) Math.sqrt(dx * dx + dy * dy); dx /= distToTarget; dy /= distToTarget; dx *= BULLET_HOMING; dy *= BULLET_HOMING; velocity.x += dx * delta; velocity.y += dy * delta; float vMag = (float) Math.sqrt(velocity.x * velocity.x + velocity.y * velocity.y); velocity.x /= vMag; velocity.y /= vMag; velocity.x *= BULLET_SPEED; velocity.y *= BULLET_SPEED; Vector2 v = velocity.cpy().scl(delta); setPosition(getX() + v.x, getY() + v.y); setOriginCenter(); setRotation(velocity.angle()); lifetime += delta; setRegion(AssetLoader.bulletAnimation.getKeyFrame(lifetime)); } } // this is where i load the images. public class AssetLoader { public static Animation bulletAnimation; public static Sprite bullet1, bullet2; public static void load() { texture = new Texture(Gdx.files.internal("SpriteN1.png")); texture.setFilter(TextureFilter.Nearest, TextureFilter.Nearest); bullet1 = new Sprite(texture, 380, 350, 45, 20); bullet1.flip(false, true); bullet2 = new Sprite(texture, 425, 350, 45, 20); bullet2.flip(false, true); Sprite[] bullets = { bullet1, bullet2 }; bulletAnimation = new Animation(0.06f, aims); bulletAnimation.setPlayMode(Animation.PlayMode.LOOP); } public static void dispose() { // We must dispose of the texture when we are finished. texture.dispose(); } // this is for the rendering of the images etc public class GameRenderer { private Bullet bullet; private Ball ball; public GameRenderer(GameWorld world) { myWorld = world; cam = new OrthographicCamera(); cam.setToOrtho(true, 480, 320); batcher = new SpriteBatch(); // Attach batcher to camera batcher.setProjectionMatrix(cam.combined); shapeRenderer = new ShapeRenderer(); shapeRenderer.setProjectionMatrix(cam.combined); // Call helper methods to initialize instance variables initGameObjects(); initAssets(); } private void initGameObjects() { ball = GameWorld.getBall(); bullet = myWorld.getBullet(); scroller = myWorld.getScroller(); } private void initAssets() { ballAnimation = AssetLoader.ballAnimation; bulletAnimation = AssetLoader.bulletAnimation; } public void render(float runTime) { Gdx.gl.glClearColor(0, 0, 0, 1); Gdx.gl.glClear(GL30.GL_COLOR_BUFFER_BIT); batcher.begin(); // Disable transparency // This is good for performance when drawing images that do not require // transparency. batcher.disableBlending(); // The ball needs transparency, so we enable that again. batcher.enableBlending(); batcher.draw(AssetLoader.ballAnimation.getKeyFrame(runTime), ball.getX(), ball.getY(), ball.getWidth(), ball.getHeight()); batcher.draw(AssetLoader.bulletAnimation.getKeyFrame(runTime), bullet.getX(), bullet.getY()); // End SpriteBatch batcher.end(); } } // this is to load the image etc on the screen i guess public class GameWorld { public static Ball ball; private Bullet bullet; private ScrollHandler scroller; public GameWorld() { ball = new Ball(480, 273, 32, 32); bullet = new Bullet(10, 10); scroller = new ScrollHandler(0); } public void update(float delta) { ball.update(delta); bullet.update(delta); scroller.update(delta); } public static Ball getBall() { return ball; } public ScrollHandler getScroller() { return scroller; } public Bullet getBullet() { return bullet; } } so there is the whole thing. the images are loaded via the AssetLoader then to the GameRenderer and GameWorld via the Bullet class. i am guessing that is how it is. sorry newbie so still learning. thank you in advace for the help or any advice.

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Making your ASP.NET/HTML Websites Indic aware – accepting Tamil, Telugu, Kannada, Hindi and ot

- by Harish Ranganathan

Its been a month since I wrote my last post. Much of work has been happening around planning for Tech Ed India, the upcoming Virtual TechDays this week as well as our Developer content at the Great Indian Developer Summit 2010. Its going to be one exciting period starting this week and I am glad I would be able to meet a lot of folks who have written to me personally that they would like to catch up at Tech Ed India. For now, I had a chance to meet the Microsoft India Development Centre team that worked on the Microsoft Indic Language Input Tool (erstwhile Akshara). The team updated me that they have also released the scripts so that the Indic input feature can be encapsulated into your own websites. For example, if you are having a web page where you collect user information, you can pretty much make your site indic aware i.e. accept inputs in Tamil, Telugu, Kannada, Hindi etc., All you would need to include would be a bunch of scripts onto your web pages and you are ready to make it, like I said, “indic aware” I have built a sample web page that accepts First Name, Last Name, Address and an additional field. When it comes to accepting indic, sometimes, you may want to avoid the indic input in certain fields and accept it in English. You can specify the MicrosoftILITWebAttach="false" attribute to the Text Boxes and Text Areas (TextMode=”Multiline” in ASP.NET) so that the particular field automatically switches over to English input. Similarly, the moment you specify that the TextMode=”Password” to make it as a password field, it automatically ignores all indic recognition and shows the masked dots for the words entered. Note that, this is, when we are going for the Opt-out mode, where we are specifying that by default all the input controls would need indic awareness and we would specify for those controls where it is not required. The other mode is Opt-in mode where you would need to add a different property to the script definition i.e. attachMode=”optin” . When we do this, we need to explicitly add the MicrosoftILITWebAttach="true" attribute for every control where we need indic input. I have created a sample web page which accepts First Name, Last Name, Address and an additional input field to demonstrate the “Opt-out”. You can copy paste this into any of your web pages to check it <form id="form1" runat="server">  <input type="hidden" id="MicrosoftILITWebEmbedInfo" attachMode="optout" value="" /> <script type="text/javascript" src="http://ilit.microsoft.com/bookmarklet/script/Tamil.js" defer="defer"></script> <div> <h2> Welcome to the Registration Page </h2> <p> First Name: <asp:TextBox runat="server" ID="txtFirstName" /> <br /> <br /> Last Name: <asp:TextBox runat="server" ID="txtLastName" /> <br /> <br /> Password: <asp:TextBox runat="server" ID="txtPassword" TextMode="Password" /> <br /> <br /> Address: <asp:TextBox runat="server" ID="txtAddress" TextMode="MultiLine" Height="100" Width="200" /> <br /> <br /> English Text: <asp:TextBox ID="txtEnglishText" runat="server" MicrosoftILITWebAttach="false" /> </p> <p>  <a style="text-decoration: none" href="http://go.microsoft.com/fwlink/?LinkID=184205&clcid=0x409"><img style="border: 0px" alt="Transliteration by Microsoft" src="http://ilit.microsoft.com/bookmarklet/images/attribution.png"></a> </p> </div> </form> If you note the code snippet above, I have included the scripts in the top with the attachMode set to “optout” and for the last TextBox, I have mentioned the MicrosoftILITWebAttach="false” attribute to make it accept English input. Additionally, you also need to add the “Microsoft Indic Language Input Tool attribution image” to your web page as a courtesy to the team that developed this feature. It would basically add a image saying “Transliteration by Microsoft” similar to a Copy Right image. You can see the screen shot below where I have typed it in Tamil. In that you will notice that the password field behaves as expected and the last field accepts English Text. You can also notice the icon that comes in the first textbox that indicates that, the field is going to accept indic text. This sample is using Tamil, but you can pretty much do it for Hindi, Telugu, Kannada, Marathi, Bengali etc., The website for getting the Indic script and other instructions is http://specials.msn.co.in/ilit/WebEmbed.aspx?language=Tamil You can replace the querystring value “Tamil” to other languages as mentioned above to get the respective script. This also works for plain HTML based websites and doesn’t necessarily need you to use ASP.NET to achieve the functionality. Note that, this form is not completely localized. This is transliterated. You can add label controls for FirstName, LastName indication etc., and use the Visual Studio tools to localize and get those values from resource files. In the resource files, you can enter the text in different languages to make this a truly localized page. If you just want to download the Indic Tool Desktop version (that can be used for typing in Word, Excel, pretty much any input area), you can download it from http://specials.msn.co.in/ilit/ In the same page, there is also a web version where you can type and get text then and there if you dont want to install the desktop version. So, go ahead, download / use them in your websites and enjoy the power of Indic. Cheers !!!

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Books are Dead! Long Live the Books!

- by smisner

We live in interesting times with regard to the availability of technical material. We have lots of free written material online in the form of vendor documentation online, forums, blogs, and Twitter. And we have written material that we can buy in the form of books, magazines, and training materials. Online videos and training – some free and some not free – are also an option. All of these formats are useful for one need or another. As an author, I pay particular attention to the demand for books, and for now I see no reason to stop authoring books. I assure you that I don’t get rich from the effort, and fortunately that is not my motivation. As someone who likes to refer to books frequently, I am still a big believer in books and have evidence from book sales that there are others like me. If I can do my part to help others learn about the technologies I work with, I will continue to produce content in a variety of formats, including books. (You can view a list of all of my books on the Publications page of my site and my online training videos at Pluralsight.) As a consumer of technical information, I prefer books because a book typically can get into a topic much more deeply than a blog post, and can provide more context than vendor documentation. It comes with a table of contents and a (hopefully accurate) index that helps me zero in on a topic of interest, and of course I can use the Search feature in digital form. Some people suggest that technology books are outdated as soon as they get published. I guess it depends on where you are with technology. Not everyone is able to upgrade to the latest and greatest version at release. I do assume, however, that the SQL Server 7.0 titles in my library have little value for me now, but I’m certain that the minute I discard the book, I’m going to want it for some reason! Meanwhile, as electronic books overtake physical books in sales, my husband is grateful that I can continue to build my collection digitally rather than physically as the books have a way of taking over significant square footage in our house! Blog posts, on the other hand, are useful for describing the scenarios that come up in real-life implementations that wouldn’t fit neatly into a book. As many years that I have working with the Microsoft BI stack, I still run into new problems that require creative thinking. Likewise, people who work with BI and other technologies that I use share what they learn through their blogs. Internet search engines help us find information in blogs that simply isn’t available anywhere else. Another great thing about blogs, also, is the connection to community and the dialog that can ensue between people with common interests. With the trend towards electronic formats for books, I imagine that we’ll see books continue to adapt to incorporate different forms of media and better ways to keep the information current. At the moment, I wish I had a better way to help readers with my last two Reporting Services books. In the case of the Microsoft® SQL Server™ 2005 Reporting Services Step by Step book, I have heard many cases of readers having problems with the sample database that shipped on CD – either the database was missing or it was corrupt. So I’ve provided a copy of the database on my site for download from http://datainspirations.com/uploads/rs2005sbsDW.zip. Then for the Microsoft® SQL Server™ 2008 Reporting Services Step by Step book, we decided to avoid the database problem by using the AdventureWorks2008 samples that Microsoft published on Codeplex (although code samples are still available on CD). We had this silly idea that the URL for the download would remain constant, but it seems that expectation was ill-founded. Currently, the sample database is found at http://msftdbprodsamples.codeplex.com/releases/view/37109 but I have no idea how long that will remain valid. My latest books (#9 and #10 which are milestones I never anticipated), Building Integrated Business Intelligence Solutions with SQL Server 2008 R2 and Office 2010 (McGraw Hill, 2011) and Business Intelligence in Microsoft SharePoint 2010 (Microsoft Press, 2011), will not ship with a CD, but will provide all code samples for download at a site maintained by the respective publishers. I expect that the URLs for the downloads for the book will remain valid, but there are lots of references to other sites that can change or disappear over time. Does that mean authors shouldn’t make reference to such sites? Personally, I think the benefits to be gained from including links are greater than the risks of the links becoming invalid at some point. Do you think the time for technology books has come to an end? Is the delivery of books in electronic format enough to keep them alive? If technological barriers were no object, what would make a book more valuable to you than other formats through which you can obtain information?

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Loading XML file containing leading zeros with SSIS preserving the zeros

- by Compudicted

Visiting the MSDN SQL Server Integration Services Forum oftentimes I could see that people would pop up asking this question: “why I am not able to load an element from an XML file that contains zeros so the leading/trailing zeros would remain intact?”. I started to suspect that such a trivial and often-required operation perhaps is being misunderstood by the developer community. I would also like to add that the whole state of affairs surrounding the XML today is probably also going to be increasingly affected by a motion of people who dislike XML in general and many aspects of it as XSD and XSLT invoke a negative reaction at best. Nevertheless, XML is in wide use today and its importance as a bridge between diverse systems is ever increasing. Therefore, I deiced to write up an example of loading an arbitrary XML file that contains leading zeros in one of its elements using SSIS so the leading zeros would be preserved keeping in mind the goal on simplicity into a table in SQL Server database. To start off bring up your BIDS (running as admin) and add a new Data Flow Task (DFT). This DFT will serve as container to adding our XML processing elements (besides, the XML Source is not available anywhere else other than from within the DFT). Double-click your DFT and drag and drop the XMS Source component from the Tool Box’s Data Flow Sources. Now, let the fun begin! Being inspired by the upcoming Christmas I created a simple XML file with one set of data that contains an imaginary SSN number of Rudolph containing several leading zeros like 0000003. This file can be viewed here. To configure the XML Source of course it is quite intuitive to point it to our XML file, next what the XML source needs is either an embedded schema (XSD) or it can generate one for us. In lack of the one I opted to auto-generate it for me and I ended up with an XSD that looked like: <?xml version="1.0"?> <xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="XMasEvent"> <xs:complexType> <xs:sequence> <xs:element minOccurs="0" name="CaseInfo"> <xs:complexType> <xs:sequence> <xs:element minOccurs="0" name="ID" type="xs:unsignedByte" /> <xs:element minOccurs="0" name="CreatedDate" type="xs:unsignedInt" /> <xs:element minOccurs="0" name="LastName" type="xs:string" /> <xs:element minOccurs="0" name="FirstName" type="xs:string" /> <xs:element minOccurs="0" name="SSN" type="xs:unsignedByte" /> <!-- Becomes string -- > <xs:element minOccurs="0" name="DOB" type="xs:unsignedInt" /> <xs:element minOccurs="0" name="Event" type="xs:string" /> <xs:element minOccurs="0" name="ClosedDate" /> </xs:sequence> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> </xs:schema> As an aside on the XML file: if your XML file does not contain the outer node (<XMasEvent>) then you may end up in a situation where you see just one field in the output. Now please note that the SSN element’s data type was chosen to be of unsignedByte (and this is for a reason). The reason is stemming from the fact all our figures in the element are digits, this is good, but this is not exactly what we need, because if we will attempt to load the data with this XSD then we are going to either get errors on the destination or most typically lose the leading zeros. So the next intuitive choice is to change the data type to string. Besides, if a SSIS package was already created based on this XSD and the data type change was done thereafter, one should re-set the metadata by right-clicking the XML Source and choosing “Advanced Editor” in which there is a refresh button at the bottom left which will do the trick. So far so good, we are ready to load our XML file, well actually yes, and no, in my experience typically some data conversion may be required. So depending on your data destination you may need to tweak the data types targeted. Let’s add a Data Conversion Task to our DFT. Your package should look like: To make the story short I only will cover the SSN field, so in my data source the target SQL Table has it as nchar(10) and we chose string in our XSD (yes, this is a big difference), under such circumstances the SSIS will complain. So will go and manipulate on the data type of SSN by making it Unicode String (DT_WSTR), World String per se. The conversion should look like: The peek at the Metadata: We are almost there, now all we need is to configure the destination. For simplicity I chose SQL Server Destination. The mapping is a breeze, F5 and I am able to insert my data into SQL Server now! Checking the zeros – they are all intact!

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Unexpected advantage of Engineered Systems

- by user12244672

It's not surprising that Engineered Systems accelerate the debugging and resolution of customer issues. But what has surprised me is just how much faster issue resolution is with Engineered Systems such as SPARC SuperCluster. These are powerful, complex, systems used by customers wanting extreme database performance, app performance, and cost saving server consolidation. A SPARC SuperCluster consists or 2 or 4 powerful T4-4 compute nodes, 3 or 6 extreme performance Exadata Storage Cells, a ZFS Storage Appliance 7320 for general purpose storage, and ultra fast Infiniband switches. Each with its own firmware. It runs Solaris 11, Solaris 10, 11gR2, LDoms virtualization, and Zones virtualization on the T4-4 compute nodes, a modified version of Solaris 11 in the ZFS Storage Appliance, a modified and highly tuned version of Oracle Linux running Exadata software on the Storage Cells, another Linux derivative in the Infiniband switches, etc. It has an Infiniband data network between the components, a 10Gb data network to the outside world, and a 1Gb management network. And customers can run whatever middleware and apps they want on it, clustered in whatever way they want. In one word, powerful. In another, complex. The system is highly Engineered. But it's designed to run general purpose applications. That is, the physical components, configuration, cabling, virtualization technologies, switches, firmware, Operating System versions, network protocols, tunables, etc. are all preset for optimum performance and robustness. That improves the customer experience as what the customer runs leverages our technical know-how and best practices and is what we've tested intensely within Oracle. It should also make debugging easier by fixing a large number of variables which would otherwise be in play if a customer or Systems Integrator had assembled such a complex system themselves from the constituent components. For example, there's myriad network protocols which could be used with Infiniband. Myriad ways the components could be interconnected, myriad tunable settings, etc. But what has really surprised me - and I've been working in this area for 15 years now - is just how much easier and faster Engineered Systems have made debugging and issue resolution. All those error opportunities for sub-optimal cabling, unusual network protocols, sub-optimal deployment of virtualization technologies, issues with 3rd party storage, issues with 3rd party multi-pathing products, etc., are simply taken out of the equation. All those error opportunities for making an issue unique to a particular set-up, the "why aren't we seeing this on any other system ?" type questions, the doubts, just go away when we or a customer discover an issue on an Engineered System. It enables a really honed response, getting to the root cause much, much faster than would otherwise be the case. Here's a couple of examples from the last month, one found in-house by my team, one found by a customer: Example 1: We found a node eviction issue running 11gR2 with Solaris 11 SRU 12 under extreme load on what we call our ExaLego test system (mimics an Exadata / SuperCluster 11gR2 Exadata Storage Cell set-up). We quickly established that an enhancement in SRU12 enabled an 11gR2 process to query Infiniband's Subnet Manager, replacing a fallback mechanism it had used previously. Under abnormally heavy load, the query could return results which were misinterpreted resulting in node eviction. In several daily joint debugging sessions between the Solaris, Infiniband, and 11gR2 teams, the issue was fully root caused, evaluated, and a fix agreed upon. That fix went back into all Solaris releases the following Monday. From initial issue discovery to the fix being put back into all Solaris releases was just 10 days. Example 2: A customer reported sporadic performance degradation. The reasons were unclear and the information sparse. The SPARC SuperCluster Engineered Systems support teams which comprises both SPARC/Solaris and Database/Exadata experts worked to root cause the issue. A number of contributing factors were discovered, including tunable parameters. An intense collaborative investigation between the engineering teams identified the root cause to a CPU bound networking thread which was being starved of CPU cycles under extreme load. Workarounds were identified. Modifications have been put back into 11gR2 to alleviate the issue and a development project already underway within Solaris has been sped up to provide the final resolution on the Solaris side. The fixed SPARC SuperCluster configuration greatly aided issue reproduction and dramatically sped up root cause analysis, allowing the correct workarounds and fixes to be identified, prioritized, and implemented. The customer is now extremely happy with performance and robustness. Since the configuration is common to other customers, the lessons learned are being proactively rolled out to other customers and incorporated into the installation procedures for future customers. This effectively acts as a turbo-boost to performance and reliability for all SPARC SuperCluster customers. If this had occurred in a "home grown" system of this complexity, I expect it would have taken at least 6 months to get to the bottom of the issue. But because it was an Engineered System, known, understood, and qualified by both the Solaris and Database teams, we were able to collaborate closely to identify cause and effect and expedite a solution for the customer. That is a key advantage of Engineered Systems which should not be underestimated. Indeed, the initial issue mitigation on the Database side followed by final fix on the Solaris side, highlights the high degree of collaboration and excellent teamwork between the Oracle engineering teams. It's a compelling advantage of the integrated Oracle Red Stack in general and Engineered Systems in particular.

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Training a 'replacement', how to enforce standards?

- by Mohgeroth

Not sure that this is the right stack exchange site to ask this of, but here goes... Scope I work for a small company that employs a few hundred people. The development team for the company is small and works out of visual foxpro. A specific department in the company hired me in as a 'lone gunman' to fix and enhance a pre-existing invoicing system. I've successfully taken an Access application that suffered from a lot of risks and limitations and converted it into a C# application driven off of a SQL server backend. I have recently obtained my undergraduate and am no expert by any means. To help make up for that I've felt that earning microsoft certifications will force me to understand more about .net and how it functions. So, after giving my notice with 9 months in advance, 3 months ago a replacement finally showed up. Their role is to learn what I have been designing to an attempt to support the applications designed in C#. The Replacement Fresh out of college with no real-world work experience, the first instinct for anything involving data was and still is listboxes... any time data is mentioned the list box is the control of choice for the replacement. This has gotten to the point, no matter how many times I discuss other controls, where I've seen 5 listboxes on a single form. Classroom experience was almost all C++ console development. So, an example of where I have concern is in a winforms application: Users need to key Reasons into a table to select from later. Given that I know that a strongly typed data set exists, I can just drag the data source from the toolbox and it would create all of this for me. I realize this is a simple example but using databinding is the key. For the past few months now we have been talking about the strongly typed dataset, how to use it and where it interacts with other controls. Data sets, how they work in relation to binding sources, adapters and data grid views. After handing this project off I expected questions about how to implement these since for me this is the way to do it. What happened next simply floors me: An instance of an adapter from the strongly typed dataset was created in the activate event of the form, a table was created and filled with data. Then, a loop was made to manually add rows to a listbox from this table. Finally, a variable was kept to do lookups to figure out what ID the record was for updates if required. How do they modify records you ask? That was my first question too. You won't believe how simple it is, all you do it double click and they type into a pop-up prompt the new value to change it to. As a data entry operator, all the modal popups would drive me absolutely insane. The final solution exceeds 100 lines of code that must be maintained. So my concern is that none of this is sinking in... the department is only allowed 20 hours a week of their time. Up until last week, we've only been given 4-5 hours a week if I'm lucky. The past week or so, I've been lucky to get 10. Question WHAT DO I DO?! I have 4 weeks left until I leave and they fully 'support' this application. I love this job and the opportunity it has given me but it's time for me to spread my wings and find something new. I am in no way, shape or form convinced that they are ready to take over. I do feel that the replacement has the technical ability to 'figure it out' but instead of learning they just write code to do all of this stuff manually. If the replacement wants to code differently in the end, as long as it works I'm fine with that as horrifiying at it looks. However to support what I have designed they MUST to understand how it works and how I have used controls and the framework to make 'magic' happen. This project has about 40 forms, a database with over 30 some odd tables, triggers and stored procedures. It relates labor to invoices to contracts to projections... it's not as simple as it was three years ago when I began this project and the department is now in a position where they cannot survive without it. How in the world can I accomplish any of the following?: Enforce standards or understanding in constent design when the department manager keeps telling them they can do it however they want to Find a way to engage the replacement in active learning of the framework and system design that support must be given for Gracefully inform sr. management that 5-9 hours a week is simply not enough time to learn about the department, pre-existing processes, applications that need to be supported AND determine where potential enhancements to the system go... Yes I know this is a wall of text, thanks for reading through me but I simply don't know what I should be doing. For me, this job is a monster of a reference and things would look extremely bad if I left and things fell apart. How do I handle this?

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Migrating Core Data to new UIManagedDocument in iOS 5

- by samerpaul

I have an app that has been on the store since iOS 3.1, so there is a large install base out there that still uses Core Data loaded up in my AppDelegate. In the most recent set of updates, I raised the minimum version to 4.3 but still kept the same way of loading the data. Recently, I decided it's time to make the minimum version 5.1 (especially with 6 around the corner), so I wanted to start using the new fancy UIManagedDocument way of using Core Data. The issue with this though is that the old database file is still sitting in the iOS app, so there is no migrating to the new document. You have to basically subclass UIManagedDocument with a new model class, and override a couple of methods to do it for you. Here's a tutorial on what I did for my app TimeTag. Step One: Add a new class file in Xcode and subclass "UIManagedDocument" Go ahead and also add a method to get the managedObjectModel out of this class. It should look like: @interface TimeTagModel : UIManagedDocument - (NSManagedObjectModel *)managedObjectModel; @end Step two: Writing the methods in the implementation file (.m) I first added a shortcut method for the applicationsDocumentDirectory, which returns the URL of the app directory. - (NSURL *)applicationDocumentsDirectory { return [[[NSFileManagerdefaultManager] URLsForDirectory:NSDocumentDirectoryinDomains:NSUserDomainMask] lastObject]; } The next step was to pull the managedObjectModel file itself (.momd file). In my project, it's called "minimalTime". - (NSManagedObjectModel *)managedObjectModel { NSString *path = [[NSBundlemainBundle] pathForResource:@"minimalTime"ofType:@"momd"]; NSURL *momURL = [NSURL fileURLWithPath:path]; NSManagedObjectModel *managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:momURL]; return managedObjectModel; } After that, I need to check for a legacy installation and migrate it to the new UIManagedDocument file instead. This is the overridden method: - (BOOL)configurePersistentStoreCoordinatorForURL:(NSURL *)storeURL ofType:(NSString *)fileType modelConfiguration:(NSString *)configuration storeOptions:(NSDictionary *)storeOptions error:(NSError **)error { // If legacy store exists, copy it to the new location NSURL *legacyPersistentStoreURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"minimalTime.sqlite"]; NSFileManager* fileManager = [NSFileManagerdefaultManager]; if ([fileManager fileExistsAtPath:legacyPersistentStoreURL.path]) { NSLog(@"Old db exists"); NSError* thisError = nil; [fileManager replaceItemAtURL:storeURL withItemAtURL:legacyPersistentStoreURL backupItemName:niloptions:NSFileManagerItemReplacementUsingNewMetadataOnlyresultingItemURL:nilerror:&thisError]; } return [superconfigurePersistentStoreCoordinatorForURL:storeURL ofType:fileType modelConfiguration:configuration storeOptions:storeOptions error:error]; } Basically what's happening above is that it checks for the minimalTime.sqlite file inside the app's bundle on the iOS device. If the file exists, it tells you inside the console, and then tells the fileManager to replace the storeURL (inside the method parameter) with the legacy URL. This basically gives your app access to all the existing data the user has generated (otherwise they would load into a blank app, which would be disastrous). It returns a YES if successful (by calling it's [super] method). Final step: Actually load this database Due to how my app works, I actually have to load the database at launch (instead of shortly after, which would be ideal). I call a method called loadDatabase, which looks like this: -(void)loadDatabase { static dispatch_once_t onceToken; // Only do this once! dispatch_once(&onceToken, ^{ // Get the URL // The minimalTimeDB name is just something I call it NSURL *url = [[selfapplicationDocumentsDirectory] URLByAppendingPathComponent:@"minimalTimeDB"]; // Init the TimeTagModel (our custom class we wrote above) with the URL self.timeTagDB = [[TimeTagModel alloc] initWithFileURL:url]; // Setup the undo manager if it's nil if (self.timeTagDB.undoManager == nil){ NSUndoManager *undoManager = [[NSUndoManager alloc] init]; [self.timeTagDB setUndoManager:undoManager]; } // You have to actually check to see if it exists already (for some reason you can't just call "open it, and if it's not there, create it") if ([[NSFileManagerdefaultManager] fileExistsAtPath:[url path]]) { // If it does exist, try to open it, and if it doesn't open, let the user (or at least you) know! [self.timeTagDB openWithCompletionHandler:^(BOOL success){ if (!success) { // Handle the error. NSLog(@"Error opening up the database"); } else{ NSLog(@"Opened the file--it already existed"); [self refreshData]; } }]; } else { // If it doesn't exist, you need to attempt to create it [self.timeTagDBsaveToURL:url forSaveOperation:UIDocumentSaveForCreatingcompletionHandler:^(BOOL success){ if (!success) { // Handle the error. NSLog(@"Error opening up the database"); } else{ NSLog(@"Created the file--it did not exist"); [self refreshData]; } }]; } }); } If you're curious what refreshData looks like, it sends out a NSNotification that the database has been loaded: -(void)refreshData { NSNotification* refreshNotification = [NSNotificationnotificationWithName:kNotificationCenterRefreshAllDatabaseData object:self.timeTagDB.managedObjectContext userInfo:nil]; [[NSNotificationCenter defaultCenter] postNotification:refreshNotification]; } The kNotificationCenterRefreshAllDatabaseData is just a constant I have defined elsewhere that keeps track of all the NSNotification names I use. I pass the managedObjectContext of the newly created file so that my view controllers can have access to it, and start passing it around to one another. The reason we do this as a Notification is because this is being run in the background, so we can't know exactly when it finishes. Make sure you design your app for this! Have some kind of loading indicator, or make sure your user can't attempt to create a record before the database actually exists, because it will crash the app.

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High Availability for IaaS, PaaS and SaaS in the Cloud

- by BuckWoody

Outages, natural disasters and unforeseen events have proved that even in a distributed architecture, you need to plan for High Availability (HA). In this entry I'll explain a few considerations for HA within Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS) and Software-as-a-Service (SaaS). In a separate post I'll talk more about Disaster Recovery (DR), since each paradigm has a different way to handle that. Planning for HA in IaaS IaaS involves Virtual Machines - so in effect, an HA strategy here takes on many of the same characteristics as it would on-premises. The primary difference is that the vendor controls the hardware, so you need to verify what they do for things like local redundancy and so on from the hardware perspective. As far as what you can control and plan for, the primary factors fall into three areas: multiple instances, geographical dispersion and task-switching. In almost every cloud vendor I've studied, to ensure your application will be protected by any level of HA, you need to have at least two of the Instances (VM's) running. This makes sense, but you might assume that the vendor just takes care of that for you - they don't. If a single VM goes down (for whatever reason) then the access to it is lost. Depending on multiple factors, you might be able to recover the data, but you should assume that you can't. You should keep a sync to another location (perhaps the vendor's storage system in another geographic datacenter or to a local location) to ensure you can continue to serve your clients. You'll also need to host the same VM's in another geographical location. Everything from a vendor outage to a network path problem could prevent your users from reaching the system, so you need to have multiple locations to handle this. This means that you'll have to figure out how to manage state between the geo's. If the system goes down in the middle of a transaction, you need to figure out what part of the process the system was in, and then re-create or transfer that state to the second set of systems. If you didn't write the software yourself, this is non-trivial. You'll also need a manual or automatic process to detect the failure and re-route the traffic to your secondary location. You could flip a DNS entry (if your application can tolerate that) or invoke another process to alias the first system to the second, such as load-balancing and so on. There are many options, but all of them involve coding the state into the application layer. If you've simply moved a state-ful application to VM's, you may not be able to easily implement an HA solution. Planning for HA in PaaS Implementing HA in PaaS is a bit simpler, since it's built on the concept of stateless applications deployment. Once again, you need at least two copies of each element in the solution (web roles, worker roles, etc.) to remain available in a single datacenter. Also, you need to deploy the application again in a separate geo, but the advantage here is that you could work out a "shared storage" model such that state is auto-balanced across the world. In fact, you don't have to maintain a "DR" site, the alternate location can be live and serving clients, and only take on extra load if the other site is not available. In Windows Azure, you can use the Traffic Manager service top route the requests as a type of auto balancer. Even with these benefits, I recommend a second backup of storage in another geographic location. Storage is inexpensive; and that second copy can be used for not only HA but DR. Planning for HA in SaaS In Software-as-a-Service (such as Office 365, or Hadoop in Windows Azure) You have far less control over the HA solution, although you still maintain the responsibility to ensure you have it. Since each SaaS is different, check with the vendor on the solution for HA - and make sure you understand what they do and what you are responsible for. They may have no HA for that solution, or pin it to a particular geo, or perhaps they have a massive HA built in with automatic load balancing (which is often the case). All of these options (with the exception of SaaS) involve higher costs for the design. Do not sacrifice reliability for cost - that will always cost you more in the end. Build in the redundancy and HA at the very outset of the project - if you try to tack it on later in the process the business will push back and potentially not implement HA. References: http://www.bing.com/search?q=windows+azure+High+Availability (each type of implementation is different, so I'm routing you to a search on the topic - look for the "Patterns and Practices" results for the area in Azure you're interested in)

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Private Cloud: Putting some method behind the madness

- by Sudip Datta

Finally, I decided to join the blogging community. And what could be a better time to start than the week after OpenWorld 2012. 50K+ attendees, demonstrations, speaker sessions and a whole lot of buzz on Oracle Cloud..It was raining clouds in this year's Openworld. I am not here to write about Oracle's cloud strategy in general, but on Enterprise Manager's cloud management capabilities. This year's Openworld was the first after we announced the 12c Cloud Control and we were happy to share the stage with quite a few early adopters. Stay tuned for videos from our customers and partners, I will post them as they get published. I met a number of platform administrators in Oracle-DBAs, Middleware Admins, SOA Admins...The cloud has affected them all, at least to the point where it beckoned more than just curiosity..Most IT infrastructure are already heavily virtualized (on VMWare and on others including Oracle VM), and some would claim they are already on “cloud” (at least their Sysadmins told them so). But none of them were confident of the benefits because their pain points continued to grow.. Isn't cloud supposed to ease those? Instead, they were chasing hundreds of databases running on hundreds of VMs, often with as much certainty propounded by Heisenberg. What happened to the age-old IT discipline around administration, compliance, configuration management? VMs are great for what they are. I personally think they have opened the doors to new approaches in which an application stack gets provisioned and updated. In fact, Enterprise Manager 12c is possibly the only tool out there that can provision full-fledged application as VM Assemblies. In this year's Openworld, customers talked on how they provisioned RAC and Siebel assemblies, which as the techies out there know, are not trivial (hearing provisioning time for Siebel down from weeks to hours was gratifying indeed). However, I do have an issue with a "one-size fits all" approach to cloud. In a week's span, I met several personas: Project owners requiring an EC2 like VM instance for their projects Admins needing the same for Sparc-Solaris. DBAs requiring dedicated databases for new projects APEX Developers needing just a ready-to-consume schema as a service Java Developers looking for a runtime platform QA engineers needing a fast clone of their production environment If you drill down further, you will end up peeling more layers of the details. For example, the requirements for Load testing and Functional testing are very different. For Load testing the test environment should ideally be the same as the production. You shouldn't run production on Exadata and load test on a VM; they will just not be good representations of one another. For Functional testing it does not possibly matter. DBAs seem to be at the worst affected of the lot. It seems they have been asked to choose between agile provisioning and faster runtime performance. And in some cases, it is really a Hobson's choice, because their infrastructure provider made no distinction between the OLTP application and the Virtual desktop! Sad indeed. When one looks at the portfolio of services that we already offer (vanilla IaaS, VM Assembly based PaaS, DBaaS) or have announced (Java PaaS, Instant Cloning, Schema-aaS), one can possibly think that we are trying to be the "renaissance man" ! Well I would have possibly digested that had it not been for the various personas that I described above. Getting the use cases right is very important for an application such as cloud management. We iterate and iterate over these over and over again and re-validate them in CABs (Customer Advisory Boards). We consider over the major aspects of tenancy: service placement, resource isolation (can a tenant execute an expensive SQL and run away with all the resources), quota and security. We, in Engineering, keep reminding ourselves that we are dealing with enterprise clouds. We owe it to our customer base ! In the coming posts, I will drill down more into each of the services. In the meanwhile, here are some collateral and demos for starters with EM 12c. http://www.oracle.com/technetwork/oem/cloud-mgmt/index.html Sudip Datta The views expressed here are my own and do not necessarily reflect the views of Oracle. Stay Connected: Twitter | Facebook | YouTube | Linkedin | Newsletter --

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UIView with IrrlichtScene - iOS

- by user1459024

i have a UIViewController in a Storyboard and want to draw a IrrlichtScene in this View Controller. My Code: WWSViewController.h #import <UIKit/UIKit.h> @interface WWSViewController : UIViewController { IBOutlet UILabel *errorLabel; } @end WWSViewController.mm #import "WWSViewController.h" #include "../../ressources/irrlicht/include/irrlicht.h" using namespace irr; using namespace core; using namespace scene; using namespace video; using namespace io; using namespace gui; @interface WWSViewController () @end @implementation WWSViewController -(void)awakeFromNib { errorLabel = [[UILabel alloc] init]; errorLabel.text = @""; IrrlichtDevice *device = createDevice( video::EDT_OGLES1, dimension2d<u32>(640, 480), 16, false, false, false, 0); /* Set the caption of the window to some nice text. Note that there is an 'L' in front of the string. The Irrlicht Engine uses wide character strings when displaying text. */ device->setWindowCaption(L"Hello World! - Irrlicht Engine Demo"); /* Get a pointer to the VideoDriver, the SceneManager and the graphical user interface environment, so that we do not always have to write device->getVideoDriver(), device->getSceneManager(), or device->getGUIEnvironment(). */ IVideoDriver* driver = device->getVideoDriver(); ISceneManager* smgr = device->getSceneManager(); IGUIEnvironment* guienv = device->getGUIEnvironment(); /* We add a hello world label to the window, using the GUI environment. The text is placed at the position (10,10) as top left corner and (260,22) as lower right corner. */ guienv->addStaticText(L"Hello World! This is the Irrlicht Software renderer!", rect<s32>(10,10,260,22), true); /* To show something interesting, we load a Quake 2 model and display it. We only have to get the Mesh from the Scene Manager with getMesh() and add a SceneNode to display the mesh with addAnimatedMeshSceneNode(). We check the return value of getMesh() to become aware of loading problems and other errors. Instead of writing the filename sydney.md2, it would also be possible to load a Maya object file (.obj), a complete Quake3 map (.bsp) or any other supported file format. By the way, that cool Quake 2 model called sydney was modelled by Brian Collins. */ IAnimatedMesh* mesh = smgr->getMesh("/Users/dbocksteger/Desktop/test/media/sydney.md2"); if (!mesh) { device->drop(); if (!errorLabel) { errorLabel = [[UILabel alloc] init]; } errorLabel.text = @"Konnte Mesh nicht laden."; return; } IAnimatedMeshSceneNode* node = smgr->addAnimatedMeshSceneNode( mesh ); /* To let the mesh look a little bit nicer, we change its material. We disable lighting because we do not have a dynamic light in here, and the mesh would be totally black otherwise. Then we set the frame loop, such that the predefined STAND animation is used. And last, we apply a texture to the mesh. Without it the mesh would be drawn using only a color. */ if (node) { node->setMaterialFlag(EMF_LIGHTING, false); node->setMD2Animation(scene::EMAT_STAND); node->setMaterialTexture( 0, driver->getTexture("/Users/dbocksteger/Desktop/test/media/sydney.bmp") ); } /* To look at the mesh, we place a camera into 3d space at the position (0, 30, -40). The camera looks from there to (0,5,0), which is approximately the place where our md2 model is. */ smgr->addCameraSceneNode(0, vector3df(0,30,-40), vector3df(0,5,0)); /* Ok, now we have set up the scene, lets draw everything: We run the device in a while() loop, until the device does not want to run any more. This would be when the user closes the window or presses ALT+F4 (or whatever keycode closes a window). */ while(device->run()) { /* Anything can be drawn between a beginScene() and an endScene() call. The beginScene() call clears the screen with a color and the depth buffer, if desired. Then we let the Scene Manager and the GUI Environment draw their content. With the endScene() call everything is presented on the screen. */ driver->beginScene(true, true, SColor(255,100,101,140)); smgr->drawAll(); guienv->drawAll(); driver->endScene(); } /* After we are done with the render loop, we have to delete the Irrlicht Device created before with createDevice(). In the Irrlicht Engine, you have to delete all objects you created with a method or function which starts with 'create'. The object is simply deleted by calling ->drop(). See the documentation at irr::IReferenceCounted::drop() for more information. */ device->drop(); } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. } - (void)viewDidUnload { [super viewDidUnload]; // Release any retained subviews of the main view. } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } @end Sadly the result is just a black View in the Simulator. :( Hope here is anyone who can explain me how i draw the scene in a UIView. Furthermore I'm getting this Error: Could not load sprite bank because the file does not exist: #DefaultFont How can i fix it ?

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jQuery Globalization Plugin from Microsoft

- by ScottGu

Last month I blogged about how Microsoft is starting to make code contributions to jQuery, and about some of the first code contributions we were working on: jQuery Templates and Data Linking support. Today, we released a prototype of a new jQuery Globalization Plugin that enables you to add globalization support to your JavaScript applications. This plugin includes globalization information for over 350 cultures ranging from Scottish Gaelic, Frisian, Hungarian, Japanese, to Canadian English. We will be releasing this plugin to the community as open-source. You can download our prototype for the jQuery Globalization plugin from our Github repository: http://github.com/nje/jquery-glob You can also download a set of samples that demonstrate some simple use-cases with it here. Understanding Globalization The jQuery Globalization plugin enables you to easily parse and format numbers, currencies, and dates for different cultures in JavaScript. For example, you can use the Globalization plugin to display the proper currency symbol for a culture: You also can use the Globalization plugin to format dates so that the day and month appear in the right order and the day and month names are correctly translated: Notice above how the Arabic year is displayed as 1431. This is because the year has been converted to use the Arabic calendar. Some cultural differences, such as different currency or different month names, are obvious. Other cultural differences are surprising and subtle. For example, in some cultures, the grouping of numbers is done unevenly. In the "te-IN" culture (Telugu in India), groups have 3 digits and then 2 digits. The number 1000000 (one million) is written as "10,00,000". Some cultures do not group numbers at all. All of these subtle cultural differences are handled by the jQuery Globalization plugin automatically. Getting dates right can be especially tricky. Different cultures have different calendars such as the Gregorian and UmAlQura calendars. A single culture can even have multiple calendars. For example, the Japanese culture uses both the Gregorian calendar and a Japanese calendar that has eras named after Japanese emperors. The Globalization Plugin includes methods for converting dates between all of these different calendars. Using Language Tags The jQuery Globalization plugin uses the language tags defined in the RFC 4646 and RFC 5646 standards to identity cultures (see http://tools.ietf.org/html/rfc5646). A language tag is composed out of one or more subtags separated by hyphens. For example: Language Tag Language Name (in English) en-AU English (Australia) en-BZ English (Belize) en-CA English (Canada) Id Indonesian zh-CHS Chinese (Simplified) Legacy Zu isiZulu Notice that a single language, such as English, can have several language tags. Speakers of English in Canada format numbers, currencies, and dates using different conventions than speakers of English in Australia or the United States. You can find the language tag for a particular culture by using the Language Subtag Lookup tool located here: http://rishida.net/utils/subtags/ The jQuery Globalization plugin download includes a folder named globinfo that contains the information for each of the 350 cultures. Actually, this folder contains more than 700 files because the folder includes both minified and un-minified versions of each file. For example, the globinfo folder includes JavaScript files named jQuery.glob.en-AU.js for English Australia, jQuery.glob.id.js for Indonesia, and jQuery.glob.zh-CHS for Chinese (Simplified) Legacy. Example: Setting a Particular Culture Imagine that you have been asked to create a German website and want to format all of the dates, currencies, and numbers using German formatting conventions correctly in JavaScript on the client. The HTML for the page might look like this: Notice the span tags above. They mark the areas of the page that we want to format with the Globalization plugin. We want to format the product price, the date the product is available, and the units of the product in stock. To use the jQuery Globalization plugin, we’ll add three JavaScript files to the page: the jQuery library, the jQuery Globalization plugin, and the culture information for a particular language: In this case, I’ve statically added the jQuery.glob.de-DE.js JavaScript file that contains the culture information for German. The language tag “de-DE” is used for German as spoken in Germany. Now that I have all of the necessary scripts, I can use the Globalization plugin to format the product price, date available, and units in stock values using the following client-side JavaScript: The jQuery Globalization plugin extends the jQuery library with new methods - including new methods named preferCulture() and format(). The preferCulture() method enables you to set the default culture used by the jQuery Globalization plugin methods. Notice that the preferCulture() method accepts a language tag. The method will find the closest culture that matches the language tag. The $.format() method is used to actually format the currencies, dates, and numbers. The second parameter passed to the $.format() method is a format specifier. For example, passing “c” causes the value to be formatted as a currency. The ReadMe file at github details the meaning of all of the various format specifiers: http://github.com/nje/jquery-glob When we open the page in a browser, everything is formatted correctly according to German language conventions. A euro symbol is used for the currency symbol. The date is formatted using German day and month names. Finally, a period instead of a comma is used a number separator: You can see a running example of the above approach with the 3_GermanSite.htm file in this samples download. Example: Enabling a User to Dynamically Select a Culture In the previous example we explicitly said that we wanted to globalize in German (by referencing the jQuery.glob.de-DE.js file). Let’s now look at the first of a few examples that demonstrate how to dynamically set the globalization culture to use. Imagine that you want to display a dropdown list of all of the 350 cultures in a page. When someone selects a culture from the dropdown list, you want all of the dates in the page to be formatted using the selected culture. Here’s the HTML for the page: Notice that all of the dates are contained in a <span> tag with a data-date attribute (data-* attributes are a new feature of HTML 5 that conveniently also still work with older browsers). We’ll format the date represented by the data-date attribute when a user selects a culture from the dropdown list. In order to display dates for any possible culture, we’ll include the jQuery.glob.all.js file like this: The jQuery Globalization plugin includes a JavaScript file named jQuery.glob.all.js. This file contains globalization information for all of the more than 350 cultures supported by the Globalization plugin. At 367KB minified, this file is not small. Because of the size of this file, unless you really need to use all of these cultures at the same time, we recommend that you add the individual JavaScript files for particular cultures that you intend to support instead of the combined jQuery.glob.all.js to a page. In the next sample I’ll show how to dynamically load just the language files you need. Next, we’ll populate the dropdown list with all of the available cultures. We can use the $.cultures property to get all of the loaded cultures: Finally, we’ll write jQuery code that grabs every span element with a data-date attribute and format the date: The jQuery Globalization plugin’s parseDate() method is used to convert a string representation of a date into a JavaScript date. The plugin’s format() method is used to format the date. The “D” format specifier causes the date to be formatted using the long date format. And now the content will be globalized correctly regardless of which of the 350 languages a user visiting the page selects. You can see a running example of the above approach with the 4_SelectCulture.htm file in this samples download. Example: Loading Globalization Files Dynamically As mentioned in the previous section, you should avoid adding the jQuery.glob.all.js file to a page whenever possible because the file is so large. A better alternative is to load the globalization information that you need dynamically. For example, imagine that you have created a dropdown list that displays a list of languages: The following jQuery code executes whenever a user selects a new language from the dropdown list. The code checks whether the globalization file associated with the selected language has already been loaded. If the globalization file has not been loaded then the globalization file is loaded dynamically by taking advantage of the jQuery $.getScript() method. The globalizePage() method is called after the requested globalization file has been loaded, and contains the client-side code to perform the globalization. The advantage of this approach is that it enables you to avoid loading the entire jQuery.glob.all.js file. Instead you only need to load the files that you need and you don’t need to load the files more than once. The 5_Dynamic.htm file in this samples download demonstrates how to implement this approach. Example: Setting the User Preferred Language Automatically Many websites detect a user’s preferred language from their browser settings and automatically use it when globalizing content. A user can set a preferred language for their browser. Then, whenever the user requests a page, this language preference is included in the request in the Accept-Language header. When using Microsoft Internet Explorer, you can set your preferred language by following these steps: Select the menu option Tools, Internet Options. Select the General tab. Click the Languages button in the Appearance section. Click the Add button to add a new language to the list of languages. Move your preferred language to the top of the list. Notice that you can list multiple languages in the Language Preference dialog. All of these languages are sent in the order that you listed them in the Accept-Language header: Accept-Language: fr-FR,id-ID;q=0.7,en-US;q=0.3 Strangely, you cannot retrieve the value of the Accept-Language header from client JavaScript. Microsoft Internet Explorer and Mozilla Firefox support a bevy of language related properties exposed by the window.navigator object, such as windows.navigator.browserLanguage and window.navigator.language, but these properties represent either the language set for the operating system or the language edition of the browser. These properties don’t enable you to retrieve the language that the user set as his or her preferred language. The only reliable way to get a user’s preferred language (the value of the Accept-Language header) is to write server code. For example, the following ASP.NET page takes advantage of the server Request.UserLanguages property to assign the user’s preferred language to a client JavaScript variable named acceptLanguage (which then allows you to access the value using client-side JavaScript): In order for this code to work, the culture information associated with the value of acceptLanguage must be included in the page. For example, if someone’s preferred culture is fr-FR (French in France) then you need to include either the jQuery.glob.fr-FR.js or the jQuery.glob.all.js JavaScript file in the page or the culture information won’t be available. The “6_AcceptLanguages.aspx” sample in this samples download demonstrates how to implement this approach. If the culture information for the user’s preferred language is not included in the page then the $.preferCulture() method will fall back to using the neutral culture (for example, using jQuery.glob.fr.js instead of jQuery.glob.fr-FR.js). If the neutral culture information is not available then the $.preferCulture() method falls back to the default culture (English). Example: Using the Globalization Plugin with the jQuery UI DatePicker One of the goals of the Globalization plugin is to make it easier to build jQuery widgets that can be used with different cultures. We wanted to make sure that the jQuery Globalization plugin could work with existing jQuery UI plugins such as the DatePicker plugin. To that end, we created a patched version of the DatePicker plugin that can take advantage of the Globalization plugin when rendering a calendar. For example, the following figure illustrates what happens when you add the jQuery Globalization and the patched jQuery UI DatePicker plugin to a page and select Indonesian as the preferred culture: Notice that the headers for the days of the week are displayed using Indonesian day name abbreviations. Furthermore, the month names are displayed in Indonesian. You can download the patched version of the jQuery UI DatePicker from our github website. Or you can use the version included in this samples download and used by the 7_DatePicker.htm sample file. Summary I’m excited about our continuing participation in the jQuery community. This Globalization plugin is the third jQuery plugin that we’ve released. We’ve really appreciated all of the great feedback and design suggestions on the jQuery templating and data-linking prototypes that we released earlier this year. We also want to thank the jQuery and jQuery UI teams for working with us to create these plugins. Hope this helps, Scott P.S. In addition to blogging, I am also now using Twitter for quick updates and to share links. You can follow me at: twitter.com/scottgu

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Use IIS Application Initialization for keeping ASP.NET Apps alive

- by Rick Strahl

I've been working quite a bit with Windows Services in the recent months, and well, it turns out that Windows Services are quite a bear to debug, deploy, update and maintain. The process of getting services set up, debugged and updated is a major chore that has to be extensively documented and or automated specifically. On most projects when a service is built, people end up scrambling for the right 'process' to use for administration. Web app deployment and maintenance on the other hand are common and well understood today, as we are constantly dealing with Web apps. There's plenty of infrastructure and tooling built into Web Tools like Visual Studio to facilitate the process. By comparison Windows Services or anything self-hosted for that matter seems convoluted.In fact, in a recent blog post I mentioned that on a recent project I'd been using self-hosting for SignalR inside of a Windows service, because the application is in fact a 'service' that also needs to send out lots of messages via SignalR. But the reality is that it could just as well be an IIS application with a service component that runs in the background. Either way you look at it, it's either a Windows Service with a built in Web Server, or an IIS application running a Service application, neither of which follows the standard Service or Web App template.Personally I much prefer Web applications. Running inside of IIS I get all the benefits of the IIS platform including service lifetime management (crash and restart), controlled shutdowns, the whole security infrastructure including easy certificate support, hot-swapping of code and the the ability to publish directly to IIS from within Visual Studio with ease.Because of these benefits we set out to move from the self hosted service into an ASP.NET Web app instead.The Missing Link for ASP.NET as a Service: Auto-LoadingI've had moments in the past where I wanted to run a 'service like' application in ASP.NET because when you think about it, it's so much easier to control a Web application remotely. Services are locked into start/stop operations, but if you host inside of a Web app you can write your own ticket and control it from anywhere. In fact nearly 10 years ago I built a background scheduling application that ran inside of ASP.NET and it worked great and it's still running doing its job today.The tricky part for running an app as a service inside of IIS then and now, is how to get IIS and ASP.NET launched so your 'service' stays alive even after an Application Pool reset. 7 years ago I faked it by using a web monitor (my own West Wind Web Monitor app) I was running anyway to monitor my various web sites for uptime, and having the monitor ping my 'service' every 20 seconds to effectively keep ASP.NET alive or fire it back up after a reload. I used a simple scheduler class that also includes some logic for 'self-reloading'. Hacky for sure, but it worked reliably.Luckily today it's much easier and more integrated to get IIS to launch ASP.NET as soon as an Application Pool is started by using the Application Initialization Module. The Application Initialization Module basically allows you to turn on Preloading on the Application Pool and the Site/IIS App, which essentially fires a request through the IIS pipeline as soon as the Application Pool has been launched. This means that effectively your ASP.NET app becomes active immediately, Application_Start is fired making sure your app stays up and running at all times. All the other features like Application Pool recycling and auto-shutdown after idle time still work, but IIS will then always immediately re-launch the application.Getting started with Application InitializationAs of IIS 8 Application Initialization is part of the IIS feature set. For IIS 7 and 7.5 there's a separate download available via Web Platform Installer. Using IIS 8 Application Initialization is an optional install component in Windows or the Windows Server Role Manager: This is an optional component so make sure you explicitly select it.IIS Configuration for Application InitializationInitialization needs to be applied on the Application Pool as well as the IIS Application level. As of IIS 8 these settings can be made through the IIS Administration console.Start with the Application Pool:Here you need to set both the Start Automatically which is always set, and the StartMode which should be set to AlwaysRunning. Both have to be set - the Start Automatically flag is set true by default and controls the starting of the application pool itself while Always Running flag is required in order to launch the application. Without the latter flag set the site settings have no effect.Now on the Site/Application level you can specify whether the site should pre load: Set the Preload Enabled flag to true.At this point ASP.NET apps should auto-load. This is all that's needed to pre-load the site if all you want is to get your site launched automatically.If you want a little more control over the load process you can add a few more settings to your web.config file that allow you to show a static page while the App is starting up. This can be useful if startup is really slow, so rather than displaying blank screen while the user is fiddling their thumbs you can display a static HTML page instead: <system.webServer> <applicationInitialization remapManagedRequestsTo="Startup.htm" skipManagedModules="true"> <add initializationPage="ping.ashx" /> </applicationInitialization> </system.webServer>This allows you to specify a page to execute in a dry run. IIS basically fakes request and pushes it directly into the IIS pipeline without hitting the network. You specify a page and IIS will fake a request to that page in this case ping.ashx which just returns a simple OK string - ie. a fast pipeline request. This request is run immediately after Application Pool restart, and while this request is running and your app is warming up, IIS can display an alternate static page - Startup.htm above. So instead of showing users an empty loading page when clicking a link on your site you can optionally show some sort of static status page that says, "we'll be right back". I'm not sure if that's such a brilliant idea since this can be pretty disruptive in some cases. Personally I think I prefer letting people wait, but at least get the response they were supposed to get back rather than a random page. But it's there if you need it.Note that the web.config stuff is optional. If you don't provide it IIS hits the default site link (/) and even if there's no matching request at the end of that request it'll still fire the request through the IIS pipeline. Ideally though you want to make sure that an ASP.NET endpoint is hit either with your default page, or by specify the initializationPage to ensure ASP.NET actually gets hit since it's possible for IIS fire unmanaged requests only for static pages (depending how your pipeline is configured).What about AppDomain Restarts?In addition to full Worker Process recycles at the IIS level, ASP.NET also has to deal with AppDomain shutdowns which can occur for a variety of reasons:Files are updated in the BIN folderWeb Deploy to your siteweb.config is changedHard application crashThese operations don't cause the worker process to restart, but they do cause ASP.NET to unload the current AppDomain and start up a new one. Because the features above only apply to Application Pool restarts, AppDomain restarts could also cause your 'ASP.NET service' to stop processing in the background.In order to keep the app running on AppDomain recycles, you can resort to a simple ping in the Application_End event:protected void Application_End() { var client = new WebClient(); var url = App.AdminConfiguration.MonitorHostUrl + "ping.aspx"; client.DownloadString(url); Trace.WriteLine("Application Shut Down Ping: " + url); }which fires any ASP.NET url to the current site at the very end of the pipeline shutdown which in turn ensures that the site immediately starts back up.Manual Configuration in ApplicationHost.configThe above UI corresponds to the following ApplicationHost.config settings. If you're using IIS 7, there's no UI for these flags so you'll have to manually edit them.When you install the Application Initialization component into IIS it should auto-configure the module into ApplicationHost.config. Unfortunately for me, with Mr. Murphy in his best form for me, the module registration did not occur and I had to manually add it.<globalModules> <add name="ApplicationInitializationModule" image="%windir%\System32\inetsrv\warmup.dll" /> </globalModules>Most likely you won't need ever need to add this, but if things are not working it's worth to check if the module is actually registered.Next you need to configure the ApplicationPool and the Web site. The following are the two relevant entries in ApplicationHost.config.<system.applicationHost> <applicationPools> <add name="West Wind West Wind Web Connection" autoStart="true" startMode="AlwaysRunning" managedRuntimeVersion="v4.0" managedPipelineMode="Integrated"> <processModel identityType="LocalSystem" setProfileEnvironment="true" /> </add> </applicationPools> <sites> <site name="Default Web Site" id="1"> <application path="/MPress.Workflow.WebQueueMessageManager" applicationPool="West Wind West Wind Web Connection" preloadEnabled="true"> <virtualDirectory path="/" physicalPath="C:\Clients\…" /> </application> </site> </sites> </system.applicationHost>On the Application Pool make sure to set the autoStart and startMode flags to true and AlwaysRunning respectively. On the site make sure to set the preloadEnabled flag to true.And that's all you should need. You can still set the web.config settings described above as well.ASP.NET as a Service?In the particular application I'm working on currently, we have a queue manager that runs as standalone service that polls a database queue and picks out jobs and processes them on several threads. The service can spin up any number of threads and keep these threads alive in the background while IIS is running doing its own thing. These threads are newly created threads, so they sit completely outside of the IIS thread pool. In order for this service to work all it needs is a long running reference that keeps it alive for the life time of the application.In this particular app there are two components that run in the background on their own threads: A scheduler that runs various scheduled tasks and handles things like picking up emails to send out outside of IIS's scope and the QueueManager. Here's what this looks like in global.asax:public class Global : System.Web.HttpApplication { private static ApplicationScheduler scheduler; private static ServiceLauncher launcher; protected void Application_Start(object sender, EventArgs e) { // Pings the service and ensures it stays alive scheduler = new ApplicationScheduler() { CheckFrequency = 600000 }; scheduler.Start(); launcher = new ServiceLauncher(); launcher.Start(); // register so shutdown is controlled HostingEnvironment.RegisterObject(launcher); }}By keeping these objects around as static instances that are set only once on startup, they survive the lifetime of the application. The code in these classes is essentially unchanged from the Windows Service code except that I could remove the various overrides required for the Windows Service interface (OnStart,OnStop,OnResume etc.). Otherwise the behavior and operation is very similar.In this application ASP.NET serves two purposes: It acts as the host for SignalR and provides the administration interface which allows remote management of the 'service'. I can start and stop the service remotely by shutting down the ApplicationScheduler very easily. I can also very easily feed stats from the queue out directly via a couple of Web requests or (as we do now) through the SignalR service.Registering a Background Object with ASP.NETNotice also the use of the HostingEnvironment.RegisterObject(). This function registers an object with ASP.NET to let it know that it's a background task that should be notified if the AppDomain shuts down. RegisterObject() requires an interface with a Stop() method that's fired and allows your code to respond to a shutdown request. Here's what the IRegisteredObject::Stop() method looks like on the launcher:public void Stop(bool immediate = false) { LogManager.Current.LogInfo("QueueManager Controller Stopped."); Controller.StopProcessing(); Controller.Dispose(); Thread.Sleep(1500); // give background threads some time HostingEnvironment.UnregisterObject(this); }Implementing IRegisterObject should help with reliability on AppDomain shutdowns. Thanks to Justin Van Patten for pointing this out to me on Twitter.RegisterObject() is not required but I would highly recommend implementing it on whatever object controls your background processing to all clean shutdowns when the AppDomain shuts down.Testing it outI'm still in the testing phase with this particular service to see if there are any side effects. But so far it doesn't look like it. With about 50 lines of code I was able to replace the Windows service startup to Web start up - everything else just worked as is. An honorable mention goes to SignalR 2.0's oWin hosting, because with the new oWin based hosting no code changes at all were required, merely a couple of configuration file settings and an assembly directive needed, to point at the SignalR startup class. Sweet!It also seems like SignalR is noticeably faster running inside of IIS compared to self-host. Startup feels faster because of the preload.Starting and Stopping the 'Service'Because the application is running as a Web Server, it's easy to have a Web interface for starting and stopping the services running inside of the service. For our queue manager the SignalR service and front monitoring app has a play and stop button for toggling the queue.If you want more administrative control and have it work more like a Windows Service you can also stop the application pool explicitly from the command line which would be equivalent to stopping and restarting a service.To start and stop from the command line you can use the IIS appCmd tool. To stop:> %windir%\system32\inetsrv\appcmd stop apppool /apppool.name:"Weblog"and to start> %windir%\system32\inetsrv\appcmd start apppool /apppool.name:"Weblog"Note that when you explicitly force the AppPool to stop running either in the UI (on the ApplicationPools page use Start/Stop) or via command line tools, the application pool will not auto-restart immediately. You have to manually start it back up.What's not to like?There are certainly a lot of benefits to running a background service in IIS, but… ASP.NET applications do have more overhead in terms of memory footprint and startup time is a little slower, but generally for server applications this is not a big deal. If the application is stable the service should fire up and stay running indefinitely. A lot of times this kind of service interface can simply be attached to an existing Web application, or if scalability requires be offloaded to its own Web server.Easier to work withBut the ultimate benefit here is that it's much easier to work with a Web app as opposed to a service. While developing I can simply turn off the auto-launch features and launch the service on demand through IIS simply by hitting a page on the site. If I want to shut down an IISRESET -stop will shut down the service easily enough. I can then attach a debugger anywhere I want and this works like any other ASP.NET application. Yes you end up on a background thread for debugging but Visual Studio handles that just fine and if you stay on a single thread this is no different than debugging any other code.SummaryUsing ASP.NET to run background service operations is probably not a super common scenario, but it probably should be something that is considered carefully when building services. Many applications have service like features and with the auto-start functionality of the Application Initialization module, it's easy to build this functionality into ASP.NET. Especially when combined with the notification features of SignalR it becomes very, very easy to create rich services that can also communicate their status easily to the outside world.Whether it's existing applications that need some background processing for scheduling related tasks, or whether you just create a separate site altogether just to host your service it's easy to do and you can leverage the same tool chain you're already using for other Web projects. If you have lots of service projects it's worth considering… give it some thought…© Rick Strahl, West Wind Technologies, 2005-2013Posted in ASP.NET SignalR IIS Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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CodePlex Daily Summary for Saturday, March 13, 2010

CodePlex Daily Summary for Saturday, March 13, 2010New Projects[Experiment] vczh DBUI: EXPERIMENT. Auto UI adaptor for a specified data base[SAMPLE PROJECT] Branch and Patch with GIT: I'll paste more here later...BlogPress: This web application provides a content management system. Coot: Facebook Photos Screensaver.DotNetNuke® JDMenu: dnnJDMenu makes it easy to use the open source JDMenu component in your DotNetNuke skin.DotNetNuke® RadRotator: dnnRadRotator makes it easy to add telerik RadRotator functionality to your site or custom module. Licensing permits anyone to use the components ...DotNetNuke® RadTabStrip: DNNRadTabStrip makes it easy to add telerik RadTabStrip functionality to your module or skin. Licensing permits anyone to use the components (incl...DotNetNuke® RadTreeView: DNNRadTreeView makes it easy to add telerik RadTreeView functionality to your module or skin. Licensing permits anyone to use the components (incl...DotNetNuke® Skin Garden: A DotNetNuke Design Challenge skin package submitted to the "Out of the box" category by Mark Allan of DnnGarden. Concise and semantic HTML 5 stru...ElmasFC: Elmas Facebook CheckerFront Callback Protocol: Front Callback Protocol make it easier for developers to create a network application in the .Net Language. It provide the flexibility of using TCP...Glass UI: A Windows Forms Control Library built specifically for Aero Glass. This will consist of existing controls, modified to render on glass, as well as ...Guitarist Tools: Some tools for guitarists.HomeUX: HomeUX is home control software featuring a Silverlight-based touch screen user interface.Homework Helper: Homework Helper help students to train simpler homework like "What's the name of the capital of France?" - Question - Answear based. It's made i...IGNOU Mini Project Allocation: A mini project allocation system.Images Compiler: Images Compiler is pretty small wpf application for users who want to resize, rename, disable colors... for too much images in very short time. It...InstitutionManagementSystem: Institution Management System prototypeManagedCv: ManagedCv is the library for C#/VB/ to use the OpenCV librarymanagement joint ownership: Application pour la gestion des actions réalisées au sein d’une copropriété. Application for management actions within a joint ownershipMapWindow6: MapWindow 6.0 is an open source geographic information system (GIS) and library of geospatial software development tools for .NET, written in C#. T...Morris Auto: Morris Auto is a social application build templateMouse control with finger detection: The aim of this project is to design an application for recognition of the movement of a finger through a webcam and then control the mouse. The pr...ORAYLIS BI.Quality: ORAYLIS BI.Quality makes it easier to develop BI Solutions in an agile environment. It adapts Unit Tests to BI Development. Propositional Framework: Different sales propositions are presented to the user using data collected from marketing intelligence, browser history or user behaviour as they ...ServStop: ServStop is a .NET application that makes it easy to stop several system services at once. Now you don't have to change startup types or stop them ...shatkotha web portal: source code of web portal shatkothaSurvey and Registration tools: Two Silverlight tools for add Survey and Registration in your websiteTable Storage Backup & Restore for Windows Azure: Allows various backup & restore options for Windows Azure Table Storage accounts: - Backup from one storage account to another - Backup a storag...Topsy Lib: This project provides wrapper methods to call Topsy's web services from C#.twNowplaying: twNowplaying is a small and handy utility that allows you to tweet your currently playing track from Spotify to Twitter. Followed by the #twNowplay...XOM: XOM: Xml Object Mapper Automatically populate your objects with data from XML via an XML map. Never do this again: if(e.GetElementsByTagName("us...YS Utils: The library contains set of useful classes which may solve common tasks for different applications.ZabViewer: CS ProjectNew ReleasesAppFabric Caching Admin Tool: AppFabric Caching Admin Tool (0.8): System Requirements:.NET 4.0 RC AppFabric Caching Beta2 Test On:Win 7 (64x)ASP.Net Routing Configuration: mal.Web.Routing v0.9.2.0: mal.Web.Routing v0.9.2.0DotNetNuke IM Module of Facebook Like Messenger: DNN IM Module of Facebook Like Messenger: Empower DNN Website with a 1-to-1 Chat Solution named Free Facebook Messenger Style Web Chat Bar of 123 Web Messenger. 1. If you need to use the c...DotNetNuke® Form and List (formerly User Defined Table): 05.01.02: Form and List 05.01.02 (Release Candidate 2)5.1.2 will be the next stabilzation release. Major Highlights fixed Cancel action in a form, it don't ...DotNetNuke® JDMenu: DNN jdMenu 1.0.0: dnnJDMenu makes it easy to use the open source JDMenu component in your DotNetNuke skin. Many thanks to Jonathan Sharp of Outwest Media for creati...DotNetNuke® RadTabStrip: DNNRadTabstrip 1.0.0: DNNRadTabStrip makes it easy to add telerik RadTabStrip functionality to your module or skin. Licensing permits anyone to use the components (inclu...DotNetNuke® RadTreeView: DNNRadTreeView 1.0.0: DNNRadTreeView makes it easy to create skins which use the Telerik RadTreeview functionality. Licensing permits anyone (including designers) to use...DotNetNuke® Skin Garden: Garden Package 1.0.0: A DotNetNuke Design Challenge skin package submitted to the "Out of the box" category by Mark Allan of DnnGarden. Concise and semantic HTML 5 struc...ElmasFC: Elmas FC: This porgram is checking your facebook account automaticly.Free DotNetNuke IM of 123 Web Messenger -- Web-based Friend List: Free Download DNN IM Module and Source Code: 123 Web Messenger offers free DotNetNuke Instant Messaging to help you embed a IM Software into DNN Website by integrating 123 Web Messenger with D...Free Silverlight & WPF Chart Control - Visifire: Visifire SL and WPF Charts 3.0.4 Released: Hi, Today we have released the final version of Visifire v3.0.4 which contains the following major features: * Zooming * Step Line chart ...Home Access Plus+: v3.1.0.0: Version 3.1.0.0 Release Problem with this release, get Version 3.1.1.1 Change Log: Fixed ampersand issue Added Unzip Features Added Help Desk ...Home Access Plus+: v3.1.1.1: Version 3.1.1.1 Release Change Log: Fixed the Help Desk File Changes: ~/App_Data/Tickets.xml ~/bin/CHS Extranet.dll ~/bin/CHS Extranet.pdbHomework Helper: Homework Helper 1.0: The first release of Homework Helper. It got basic functionality. Check the Documentation or press F1 while using the program.Homework Helper: Homework Helper v1.0: This is the latest version of Homework Helper. Just a few updates since the latest one (a couple of minutes ago). Now it saves your settings! Instr...IBCSharp: IBCSharp 1.02: What IBCSharp 1.02.zip unzips to: http://i39.tinypic.com/28hz8m1.png Note: The above solution has MSTest, Typemock Isolator, and Microsoft CHESS c...InfoService: InfoService v1.5 RC 1: InfoService Release Canidate Please note this is a RC. It should be stable, but i can't guarantee that! So use it on your own risk. Please read Pl...IntX: IntX 0.9.3.3: Fixed issue #7100IronRuby: 1.0 RC3: The IronRuby team is pleased to announce version 1.0 RC3! As IronRuby approaches the final 1.0, these RCs will contain crucial bug fixes and enhanc...MAISGestão: LayerDiagram (pdf): This is the final version of the layer diagramMapWindow6: MapWindow 6.0 msi (March 12): After some significant trouble with svn, this site represents a test of using Mercurial for our version control. Hopefully the choice of this new ...MSBuild Mercurial Tasks: 0.2.0 Beta: This release realises the Scenario 2 and provides two MSBuild tasks: HgCommit and HgPush. This task allows to create a new changeset in the current...NLog - Advanced .NET Logging: NLog 2.0 preview 1: This is very experimental first build of NLog from 2.0 branch is available for download. It’s not alpha, beta or even gamma, just a preview of upco...Open NFe: Fonte DANFE v1.9.5: Código-fonte para a versão 1.9.5 do DANFEOpiConsole (XNA): OpiConsole 0.3: OpiConsole 0.3 OpiConsole includes: * PC & Xbox support. * Default commands (cvar, quit etc.) * Ability to add custom commands. *...ORAYLIS BI.Quality: Release 1.0.0: Release 1.0.0Pcap.Net: Pcap.Net 0.5.0 (38141): Pcap.Net - March 2010 Release Pcap.Net is a .NET wrapper for WinPcap written in C++/CLI and C#. It Features almost all WinPcap features and include...PhysX.Net: PhysX.Net 0.12.0.0 Beta 1: This is beta release of 0.12.0.0 for people to test and provide feedback on. It targets 2.8.3.21 of PhysXPólya: Pólya 2010 03 13 alpha: Pólya is a collection of generic data structures; as generic as C#/.Net allows them to be. In this first release the focus has been on some fundam...Prolog.NET: Prolog.NET 1.0 Beta 1.3: Installer includes: primary Prolog.NET assembly Prolog.NET Workbench Prolog.NET Scheduler sample application PrologTest console applicatio...Propositional Framework: USP: The initial code drop was based on the Autocomplete demo and the neural network approach used by Jeff Heaton (@ http://www.heatonresearch.com/) - e...Protocol Transition with BizTalk: Source: Stable buildRoTwee: RoTwee (7.1.0.0): Now picture of your friend is shown in RoTwee. Place mouse cursor to the tweet !ServStop: 0.5.0.0: Initial Release Contents of ServStop0500.zip ServStop.exe 0.5.0.0 Initial Release. 32,768 bytes. Other files None. Source code available on "...SkeinLibManaged: Release 1.0.0.0 (Beta): This is the compiled DLL with XML documentation, so there should be plenty of context sensitive help and Intellisense. This is the Release version...sPWadmin: pwAdmin v0.9a: Added: LiveChat Plugin Shows the latest 150 chat messages from "/Your PW Server/logservice/logs/world2.chat" Refresh chat every 5 seconds Allow...sPWadmin: pwAdmin v0.9b: Some minor fixes to style, layout & different browser support Merged the forms in server configuration tab to a single form that can now save mul...Topsy Lib: Initial release: Initial Debug and Release versions.twNowplaying: twNowplaying: Press the Twitter icon to get started, don't forget to submit bugs to the issue tracker. What's new This release has some minor UI fixes.twNowplaying: twNowplaying Alpha 1.0: Press the Twitter icon to get started, don't forget to submit bugs to the issue tracker. Thank you , and enjoy! =)VCC: Latest build, v2.1.30312.0: Automatic drop of latest buildWPF Dialogs: Version 0.1.3: The FolderBrowseDialog / FolderBrowseDialog - Deutsch was improved and extended.XOM: XOM 0.1A: Just a release of the code I have so far. In order to get your objects to work, you need to create an XML file to define your objects. Here is a ...Xpress - ASP.NET MVC 个人博客程序: xpress2.1.1.0312.beta: 最新beta版，注意：此版本和2.1.0不兼容更改内容：将主题文件发放在 Views 文件夹下主题文件支持强类型Model 主题资源文件放在Resouces目录下YS Utils: V 1.0.0.0: This is first release. The YSUtils library contains first set of classes. ZIP files contains documentation.Most Popular ProjectsMetaSharpWBFS ManagerRawrAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)ASP.NET Ajax LibraryASP.NETMicrosoft SQL Server Community & SamplesMost Active ProjectsRawrN2 CMSBlogEngine.NETFasterflect - A Fast and Simple Reflection APIpatterns & practices – Enterprise LibraryFarseer Physics EngineSharePoint Team-MailerCaliburn: An Application Framework for WPF and SilverlightCalcium: A modular application toolset leveraging PrismjQuery Library for SharePoint Web Services

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Silverlight Recruiting Application Part 6 - Adding an Interview Scheduling Module/View

Between the last post and this one I went ahead and carried the ideas for the Jobs module and view into the Applicants module and view- they're both doing more or less the same thing, except with different objects being at their core. Made for an easy cut-and-paste operation with a few items being switched from one to another. Now that we have the ability to add postings and applicants, wouldn't it be nice if we could schedule an interview? Of course it would! Scheduling Module I think you get the drift from previous posts that these project structures start looking somewhat similar. The interview scheduling module is no different than the rest- it gets a SchedulingModule.cs file at the root that inherits from IModule, and there is a single SchedulerView.xsml and SchedulerViewModel.cs setup for our V+VM. We have one unique concern as we enter into this- RadScheduler deals with AppointmentsSource, not ItemsSource, so there are some special considerations to take into account when planning this module. First, I need something which inherits from AppointmentBase. This is the core of the RadScheduler appointment, and if you are planning to do any form of custom appointment, you'll want it to inherit from this. Then you can add-on functionality as needed. Here is my addition to the mix, the InterviewAppointment: 01.public class InterviewAppointment : AppointmentBase 02.{ 03. private int _applicantID; 04. public int ApplicantID 05. { 06. get { return this._applicantID; } 07. set 08. { 09. if (_applicantID != value) 10. { 11. _applicantID = value; 12. OnPropertyChanged("ApplicantID"); 13. } 14. } 15. } 16. 17. private int _postingID; 18. public int PostingID 19. { 20. get { return _postingID; } 21. set 22. { 23. if (_postingID != value) 24. { 25. _postingID = value; 26. OnPropertyChanged("PostingID"); 27. } 28. } 29. } 30. 31. private string _body; 32. public string Body 33. { 34. get { return _body; } 35. set 36. { 37. if (_body != value) 38. { 39. _body = value; 40. OnPropertyChanged("Body"); 41. } 42. } 43. } 44. 45. private int _interviewID; 46. public int InterviewID 47. { 48. get { return _interviewID; } 49. set 50. { 51. if (_interviewID != value) 52. { 53. _interviewID = value; 54. OnPropertyChanged("InterviewID"); 55. } 56. } 57. } 58. 59. public override IAppointment Copy() 60. { 61. IAppointment appointment = new InterviewAppointment(); 62. appointment.CopyFrom(this); 63. return appointment; 64. } 65. 66. public override void CopyFrom(IAppointment other) 67. { 68. base.CopyFrom(other); 69. var appointment = other as InterviewAppointment; 70. if (appointment != null) 71. { 72. ApplicantID = appointment.ApplicantID; 73. PostingID = appointment.PostingID; 74. Body = appointment.Body; 75. InterviewID = appointment.InterviewID; 76. } 77. } 78.} Nothing too exciting going on here, we just make sure that our custom fields are persisted (specifically set in CopyFrom at the bottom) and notifications are fired- otherwise this ends up exactly like the standard appointment as far as interactions, etc. But if we've got custom appointment items... that also means we need to customize what our appointment dialog window will look like. Customizing the Edit Appointment Dialog This initially sounds a lot more intimidating than it really is. The first step here depends on what you're dealing with for theming, but for ease of everything I went ahead and extracted my templates in Blend for RadScheduler so I could modify it as I pleased. For the faint of heart, the RadScheduler template is a few thousand lines of goodness since there are some very complex things going on in that control. I've gone ahead and trimmed down the template parts I don't need as much as possible, so what is left is all that is relevant to the Edit Appointment Dialog. Here's the resulting Xaml, with line numbers, so I can explain further: 001.<UserControl.Resources> 002.  003. <helpers:DataContextProxy x:Key="DataContextProxy" /> 004. 005. <telerik:Windows7Theme x:Key="Theme" /> 006. <SolidColorBrush x:Key="DialogWindowBackground" 007. Color="White" /> 008. <SolidColorBrush x:Key="CategorySelectorBorderBrush" 009. Color="#FFB1B1B1" /> 010. <LinearGradientBrush x:Key="RadToolBar_InnerBackground" 011. EndPoint="0.5,1" 012. StartPoint="0.5,0"> 013. <GradientStop Color="#FFFDFEFF" 014. Offset="0" /> 015. <GradientStop Color="#FFDDE9F7" 016. Offset="1" /> 017. <GradientStop Color="#FFE6F0FA" 018. Offset="0.5" /> 019. <GradientStop Color="#FFDCE6F4" 020. Offset="0.5" /> 021. </LinearGradientBrush> 022. <Style x:Key="FormElementTextBlockStyle" 023. TargetType="TextBlock"> 024. <Setter Property="HorizontalAlignment" 025. Value="Right" /> 026. <Setter Property="VerticalAlignment" 027. Value="Top" /> 028. <Setter Property="Margin" 029. Value="15, 15, 0, 2" /> 030. </Style> 031. <Style x:Key="FormElementStyle" 032. TargetType="FrameworkElement"> 033. <Setter Property="Margin" 034. Value="10, 10, 0, 2" /> 035. </Style> 036. <SolidColorBrush x:Key="GenericShallowBorderBrush" 037. Color="#FF979994" /> 038. <telerik:BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" /> 039. <telerikScheduler:ImportanceToBooleanConverter x:Key="ImportanceToBooleanConverter" /> 040. <telerikScheduler:NullToVisibilityConverter x:Key="NullToVisibilityConverter" /> 041. <telerikScheduler:InvertedNullToVisibilityConverter x:Key="InvertedNullToVisibilityConverter" /> 042. <scheduler:ResourcesSeparatorConverter x:Key="ResourcesSeparatorConverter" /> 043. <DataTemplate x:Key="IconDataEditTemplate"> 044. <Image Source="/Telerik.Windows.Controls.Scheduler;component/Themes/Office/Images/cal.png" 045. Margin="3,3,0,0" 046. Width="16" 047. Height="16" /> 048. </DataTemplate> 049. <DataTemplate x:Key="SingleSelectionTemplate"> 050. <Grid VerticalAlignment="Stretch" 051. HorizontalAlignment="Stretch"> 052. <Grid.RowDefinitions> 053. <RowDefinition Height="Auto" /> 054. </Grid.RowDefinitions> 055. <Grid.ColumnDefinitions> 056. <ColumnDefinition Width="Auto" 057. MinWidth="84" /> 058. <ColumnDefinition Width="Auto" 059. MinWidth="200" /> 060. </Grid.ColumnDefinitions> 061. <TextBlock x:Name="SelectionNameLabel" 062. Margin="0,13,4,2" 063. Text="{Binding ResourceType.DisplayName}" 064. Style="{StaticResource FormElementTextBlockStyle}" 065. Grid.Column="0" /> 066. <telerikInput:RadComboBox ItemsSource="{Binding ResourceItems}" 067. Width="185" 068. Margin="5,10,20,2" 069. HorizontalAlignment="Left" 070. Grid.Column="1" 071. ClearSelectionButtonVisibility="Visible" 072. ClearSelectionButtonContent="Clear All" 073. DisplayMemberPath="Resource.DisplayName" 074. telerik:StyleManager.Theme="{StaticResource Theme}" 075. SelectedItem="{Binding SelectedItem, Mode=TwoWay}" /> 076. </Grid> 077. </DataTemplate> 078. <DataTemplate x:Key="MultipleSelectionTemplate"> 079. <Grid VerticalAlignment="Stretch" 080. HorizontalAlignment="Stretch"> 081. <Grid.RowDefinitions> 082. <RowDefinition Height="Auto" /> 083. </Grid.RowDefinitions> 084. <Grid.ColumnDefinitions> 085. <ColumnDefinition Width="Auto" 086. MinWidth="84" /> 087. <ColumnDefinition Width="Auto" 088. MinWidth="200" /> 089. </Grid.ColumnDefinitions> 090. <TextBlock x:Name="SelectionNameLabel" 091. Grid.Column="0" 092. Text="{Binding ResourceType.DisplayName}" 093. Margin="0,13,4,2" 094. Style="{StaticResource FormElementTextBlockStyle}" /> 095. <telerikInput:RadComboBox Grid.Column="1" 096. Width="185" 097. HorizontalAlignment="Left" 098. Margin="5,10,20,2" 099. ItemsSource="{Binding ResourceItems}" 100. SelectedIndex="{Binding SelectedIndex, Mode=TwoWay}" 101. ClearSelectionButtonVisibility="Visible" 102. ClearSelectionButtonContent="Clear All" 103. telerik:StyleManager.Theme="{StaticResource Theme}"> 104. <telerikInput:RadComboBox.ItemTemplate> 105. <DataTemplate> 106. <Grid HorizontalAlignment="Stretch" 107. VerticalAlignment="Stretch"> 108. <CheckBox VerticalAlignment="Center" 109. HorizontalContentAlignment="Stretch" 110. VerticalContentAlignment="Center" 111. IsChecked="{Binding IsChecked, Mode=TwoWay}" 112. Content="{Binding Resource.DisplayName}"> 113. <CheckBox.ContentTemplate> 114. <DataTemplate> 115. <TextBlock HorizontalAlignment="Stretch" 116. VerticalAlignment="Stretch" 117. Text="{Binding Content, RelativeSource={RelativeSource TemplatedParent}}" /> 118. </DataTemplate> 119. </CheckBox.ContentTemplate> 120. </CheckBox> 121. </Grid> 122. </DataTemplate> 123. </telerikInput:RadComboBox.ItemTemplate> 124. </telerikInput:RadComboBox> 125. </Grid> 126. </DataTemplate> 127. <scheduler:ResourceTypeTemplateSelector x:Key="ItemTemplateSelector" 128. MultipleSelectionTemplate="{StaticResource MultipleSelectionTemplate}" 129. SingleSelectionTemplate="{StaticResource SingleSelectionTemplate}" /> 130.  131. 132. <ControlTemplate x:Key="EditAppointmentTemplate" 133. TargetType="telerikScheduler:AppointmentDialogWindow"> 134. <StackPanel Background="{TemplateBinding Background}" 135. UseLayoutRounding="True"> 136. <StackPanel Grid.Row="0" 137. Orientation="Horizontal" 138. Background="{StaticResource RadToolBar_InnerBackground}" 139. Grid.ColumnSpan="2" 140. Height="0"> 141.  142. <Border Margin="1,1,0,0" 143. Background="#50000000" 144. HorizontalAlignment="Left" 145. VerticalAlignment="Center" 146. Width="2" 147. Height="16"> 148. <Border Margin="0,0,1,1" 149. Background="#80FFFFFF" 150. HorizontalAlignment="Left" 151. Width="1" /> 152. </Border> 153. <Border Margin="1,1,0,0" 154. Background="#50000000" 155. HorizontalAlignment="Left" 156. VerticalAlignment="Center" 157. Width="2" 158. Height="16"> 159. <Border Margin="0,0,1,1" 160. Background="#80FFFFFF" 161. HorizontalAlignment="Left" 162. Width="1" /> 163. </Border> 164. <TextBlock telerik:LocalizationManager.ResourceKey="ShowAs" 165. VerticalAlignment="Center" 166. Margin="5,0,0,0" /> 167. <telerikInput:RadComboBox ItemsSource="{TemplateBinding TimeMarkers}" 168. Width="100" 169. Height="20" 170. VerticalAlignment="Center" 171. Margin="5,0,0,0" 172. ClearSelectionButtonVisibility="Visible" 173. ClearSelectionButtonContent="Clear" 174. SelectedItem="{Binding TimeMarker,RelativeSource={RelativeSource TemplatedParent},Mode=TwoWay}" 175. telerik:StyleManager.Theme="{StaticResource Theme}"> 176. <telerikInput:RadComboBox.ItemTemplate> 177. <DataTemplate> 178. <StackPanel Orientation="Horizontal"> 179. <Rectangle Fill="{Binding TimeMarkerBrush}" 180. Margin="2" 181. Width="12" 182. Height="12" /> 183. <TextBlock Text="{Binding TimeMarkerName}" 184. Margin="2" /> 185. </StackPanel> 186. </DataTemplate> 187. </telerikInput:RadComboBox.ItemTemplate> 188. </telerikInput:RadComboBox> 189. <telerik:RadToggleButton x:Name="High" 190. BorderThickness="0" 191. Background="{StaticResource RadToolBar_InnerBackground}" 192. DataContext="{TemplateBinding EditedAppointment}" 193. telerik:StyleManager.Theme="{StaticResource Theme}" 194. IsChecked="{Binding Importance,Mode=TwoWay, Converter={StaticResource ImportanceToBooleanConverter},ConverterParameter=High}" 195. Margin="2,2,0,2" 196. Width="23" 197. Height="23" 198. HorizontalContentAlignment="Center" 199. ToolTipService.ToolTip="High importance" 200. CommandParameter="High" 201. Command="telerikScheduler:RadSchedulerCommands.SetAppointmentImportance"> 202. <StackPanel HorizontalAlignment="Center"> 203. <Path Stretch="Fill" 204. Height="10" 205. HorizontalAlignment="Center" 206. VerticalAlignment="Top" 207. Width="5.451" 208. Data="M200.39647,58.840393 C200.39337,58.336426 201.14566,57.683922 202.56244,57.684292 C204.06589,57.684685 204.73764,58.357765 204.72783,58.992363 C205.04649,61.795574 203.04713,64.181099 202.47388,66.133446 C201.93753,64.154961 199.9471,61.560352 200.39647,58.840393 z"> 209. <Path.Fill> 210. <LinearGradientBrush EndPoint="1.059,0.375" 211. StartPoint="-0.457,0.519"> 212. <GradientStop Color="#FFFF0606" 213. Offset="0.609" /> 214. <GradientStop Color="#FFBF0303" 215. Offset="0.927" /> 216. </LinearGradientBrush> 217. </Path.Fill> 218. </Path> 219. <Ellipse Height="3" 220. HorizontalAlignment="Center" 221. Margin="0,-1,0,0" 222. VerticalAlignment="Top" 223. Width="3"> 224. <Ellipse.Fill> 225. <RadialGradientBrush> 226. <GradientStop Color="#FFFF0606" 227. Offset="0" /> 228. <GradientStop Color="#FFBF0303" 229. Offset="1" /> 230. </RadialGradientBrush> 231. </Ellipse.Fill> 232. </Ellipse> 233. </StackPanel> 234. </telerik:RadToggleButton> 235. <telerik:RadToggleButton x:Name="Low" 236. HorizontalContentAlignment="Center" 237. BorderThickness="0" 238. Background="{StaticResource RadToolBar_InnerBackground}" 239. DataContext="{TemplateBinding EditedAppointment}" 240. IsChecked="{Binding Importance,Mode=TwoWay, Converter={StaticResource ImportanceToBooleanConverter},ConverterParameter=Low}" 241. Margin="0,2,0,2" 242. Width="23" 243. Height="23" 244. ToolTipService.ToolTip="Low importance" 245. CommandParameter="Low" 246. telerik:StyleManager.Theme="{StaticResource Theme}" 247. Command="telerikScheduler:RadSchedulerCommands.SetAppointmentImportance"> 248. <Path Stretch="Fill" 249. Height="12" 250. HorizontalAlignment="Center" 251. VerticalAlignment="Top" 252. Width="9" 253. Data="M222.40353,60.139881 L226.65768,60.139843 L226.63687,67.240196 L229.15347,67.240196 L224.37816,71.394943 L219.65274,67.240196 L222.37572,67.219345 z" 254. Stroke="#FF0365A7"> 255. <Path.Fill> 256. <LinearGradientBrush EndPoint="1.059,0.375" 257. StartPoint="-0.457,0.519"> 258. <GradientStop Color="#FFBBE4FF" /> 259. <GradientStop Color="#FF024572" 260. Offset="0.836" /> 261. <GradientStop Color="#FF43ADF4" 262. Offset="0.466" /> 263. </LinearGradientBrush> 264. </Path.Fill> 265. </Path> 266. </telerik:RadToggleButton> 267. </StackPanel > 268. <Border DataContext="{TemplateBinding EditedAppointment}" 269. Background="{Binding Category.CategoryBrush}" 270. Visibility="{Binding Category,Converter={StaticResource NullToVisibilityConverter}}" 271. CornerRadius="3" 272. Height="20" 273. Margin="5,10,5,0"> 274. <TextBlock Text="{Binding Category.DisplayName}" 275. VerticalAlignment="Center" 276. Margin="5,0,0,0" /> 277. </Border> 278. <Grid VerticalAlignment="Stretch" 279. HorizontalAlignment="Stretch" 280. DataContext="{TemplateBinding EditedAppointment}" 281. Background="{TemplateBinding Background}"> 282. <Grid.RowDefinitions> 283. <RowDefinition Height="Auto" /> 284. <RowDefinition Height="Auto" /> 285. <RowDefinition Height="Auto" /> 286. <RowDefinition Height="Auto" /> 287. <RowDefinition Height="Auto" /> 288. <RowDefinition Height="Auto" /> 289. <RowDefinition Height="Auto" /> 290. <RowDefinition Height="Auto" /> 291. <RowDefinition Height="Auto" /> 292. <RowDefinition Height="Auto" /> 293. </Grid.RowDefinitions> 294. <Grid.ColumnDefinitions> 295. <ColumnDefinition Width="Auto" 296. MinWidth="100" /> 297. <ColumnDefinition Width="Auto" 298. MinWidth="200" /> 299. </Grid.ColumnDefinitions> 300.  301. <TextBlock x:Name="SubjectLabel" 302. Grid.Row="0" 303. Grid.Column="0" 304. Margin="0,15,0,2" 305. telerik:LocalizationManager.ResourceKey="Subject" 306. Style="{StaticResource FormElementTextBlockStyle}" /> 307. <TextBox x:Name="Subject" 308. Grid.Row="0" 309. Grid.Column="1" 310. MinHeight="22" 311. Padding="4 2" 312. Width="340" 313. HorizontalAlignment="Left" 314. Text="{Binding Subject, Mode=TwoWay}" 315. MaxLength="255" 316. telerik:StyleManager.Theme="{StaticResource Theme}" 317. Margin="10,12,20,2" /> 318.  319. <TextBlock x:Name="DescriptionLabel" 320. Grid.Row="1" 321. Grid.Column="0" 322. Margin="0,13,0,2" 323. telerik:LocalizationManager.ResourceKey="Body" 324. Style="{StaticResource FormElementTextBlockStyle}" /> 325. <TextBox x:Name="Body" 326. VerticalAlignment="top" 327. Grid.Row="1" 328. Grid.Column="1" 329. Height="Auto" 330. MaxHeight="82" 331. Width="340" 332. HorizontalAlignment="Left" 333. MinHeight="22" 334. Padding="4 2" 335. TextWrapping="Wrap" 336. telerik:StyleManager.Theme="{StaticResource Theme}" 337. Text="{Binding Body, Mode=TwoWay}" 338. AcceptsReturn="true" 339. Margin="10,10,20,2" 340. HorizontalScrollBarVisibility="Auto" 341. VerticalScrollBarVisibility="Auto" /> 342.  343. <TextBlock x:Name="StartDateLabel" 344. Grid.Row="2" 345. Grid.Column="0" 346. Margin="0,13,0,2" 347. telerik:LocalizationManager.ResourceKey="StartTime" 348. Style="{StaticResource FormElementTextBlockStyle}" /> 349. <telerikScheduler:DateTimePicker x:Name="StartDateTime" 350. Height="22" 351. Grid.Row="2" 352. Grid.Column="1" 353. HorizontalAlignment="Left" 354. Margin="10,10,20,2" 355. Style="{StaticResource FormElementStyle}" 356. SelectedDateTime="{Binding Start, Mode=TwoWay}" 357. telerikScheduler:StartEndDatePicker.EndPicker="{Binding ElementName=EndDateTime}" 358. IsTabStop="False" 359. IsEnabled="False" /> 360. <TextBlock x:Name="EndDateLabel" 361. Grid.Row="3" 362. Grid.Column="0" 363. Margin="0,13,0,2" 364. telerik:LocalizationManager.ResourceKey="EndTime" 365. Style="{StaticResource FormElementTextBlockStyle}" /> 366. <telerikScheduler:DateTimePicker x:Name="EndDateTime" 367. Height="22" 368. Grid.Row="3" 369. Grid.Column="1" 370. HorizontalAlignment="Left" 371. Margin="10,10,20,2" 372. Style="{StaticResource FormElementStyle}" 373. IsTabStop="False" 374. IsEnabled="False" 375. SelectedDateTime="{Binding End, Mode=TwoWay}" /> 376.  377. <CheckBox x:Name="AllDayEventCheckbox" 378. IsChecked="{Binding IsAllDayEvent, Mode=TwoWay}" 379. Grid.Row="4" 380. Grid.Column="1" 381. Margin="10,10,20,2" 382. HorizontalAlignment="Left" 383. telerik:StyleManager.Theme="{StaticResource Theme}" 384. telerik:LocalizationManager.ResourceKey="AllDayEvent"> 385. <telerik:CommandManager.InputBindings> 386. <telerik:InputBindingCollection> 387. <telerik:MouseBinding Command="telerikScheduler:RadSchedulerCommands.ChangeTimePickersVisibility" 388. Gesture="LeftClick" /> 389. </telerik:InputBindingCollection> 390. </telerik:CommandManager.InputBindings> 391. </CheckBox> 392. <Grid Grid.Row="5" 393. Grid.ColumnSpan="2"> 394. <Grid.ColumnDefinitions> 395. <ColumnDefinition Width="Auto" 396. MinWidth="100" /> 397. <ColumnDefinition Width="Auto" 398. MinWidth="200" /> 399. </Grid.ColumnDefinitions> 400. <Grid.RowDefinitions> 401. <RowDefinition Height="Auto" /> 402. <RowDefinition Height="Auto" /> 403. </Grid.RowDefinitions> 404. <TextBlock Text="Applicant" 405. Margin="0,13,0,2" 406. Style="{StaticResource FormElementTextBlockStyle}" /> 407. <telerikInput:RadComboBox IsEditable="False" 408. Grid.Column="1" 409. Height="24" 410. VerticalAlignment="Center" 411. ItemsSource="{Binding Source={StaticResource DataContextProxy}, Path=DataSource.ApplicantList}" 412. SelectedValue="{Binding ApplicantID, Mode=TwoWay}" 413. SelectedValuePath="ApplicantID" 414. DisplayMemberPath="FirstName" /> 415. 416. <TextBlock Text="Job" 417. Margin="0,13,0,2" 418. Grid.Row="1" 419. Style="{StaticResource FormElementTextBlockStyle}" /> 420. <telerikInput:RadComboBox IsEditable="False" 421. Grid.Column="1" 422. Grid.Row="1" 423. Height="24" 424. VerticalAlignment="Center" 425. ItemsSource="{Binding Source={StaticResource DataContextProxy}, Path=DataSource.JobsList}" 426. SelectedValue="{Binding PostingID, Mode=TwoWay}" 427. SelectedValuePath="PostingID" 428. DisplayMemberPath="JobTitle"/> 429. </Grid> 430.  431. <Grid x:Name="ResourcesLayout" 432. Grid.Row="7" 433. Grid.Column="0" 434. Grid.ColumnSpan="2" 435. MaxHeight="130" 436. Margin="20,5,20,0"> 437. <Border Margin="0" 438. BorderThickness="1" 439. BorderBrush="{StaticResource GenericShallowBorderBrush}" 440. Visibility="{Binding ElementName=ResourcesScrollViewer, Path=ComputedVerticalScrollBarVisibility}"></Border> 441. <ScrollViewer x:Name="ResourcesScrollViewer" 442. IsTabStop="false" 443. Grid.Row="6" 444. Grid.Column="0" 445. Grid.ColumnSpan="2" 446. Margin="1" 447. telerik:StyleManager.Theme="{StaticResource Theme}" 448. VerticalScrollBarVisibility="Auto"> 449. <scheduler:ResourcesItemsControl x:Name="PART_Resources" 450. HorizontalAlignment="Left" 451. Padding="0,2,0,5" 452. IsTabStop="false" 453. ItemsSource="{TemplateBinding ResourceTypeModels}" 454. ItemTemplateSelector="{StaticResource ItemTemplateSelector}" /> 455. </ScrollViewer> 456. </Grid> 457. <StackPanel x:Name="FooterControls" 458. Margin="5 10 10 10" 459. Grid.Row="8" 460. Grid.Column="1" 461. HorizontalAlignment="Left" 462. Orientation="Horizontal"> 463. <telerik:RadButton x:Name="OKButton" 464. Margin="5" 465. Padding="10 0" 466. MinWidth="80" 467. Command="telerikScheduler:RadSchedulerCommands.SaveAppointment" 468. telerik:StyleManager.Theme="{StaticResource Theme}" 469. telerikNavigation:RadWindow.ResponseButton="Accept" 470. telerik:LocalizationManager.ResourceKey="SaveAndCloseCommandText"> 471. </telerik:RadButton> 472. <telerik:RadButton x:Name="CancelButton" 473. Margin="5" 474. Padding="10 0" 475. MinWidth="80" 476. telerik:LocalizationManager.ResourceKey="Cancel" 477. telerik:StyleManager.Theme="{StaticResource Theme}" 478. telerikNavigation:RadWindow.ResponseButton="Cancel" 479. Command="telerik:WindowCommands.Close"> 480. </telerik:RadButton> 481. </StackPanel> 482. </Grid> 483. <vsm:VisualStateManager.VisualStateGroups> 484. <vsm:VisualStateGroup x:Name="RecurrenceRuleState"> 485. <vsm:VisualState x:Name="RecurrenceRuleIsNull"> 486. <Storyboard> 487. <ObjectAnimationUsingKeyFrames Storyboard.TargetName="StartDateTime" 488. Storyboard.TargetProperty="IsEnabled" 489. Duration="0"> 490. <DiscreteObjectKeyFrame KeyTime="0" 491. Value="True" /> 492. </ObjectAnimationUsingKeyFrames> 493. <ObjectAnimationUsingKeyFrames Storyboard.TargetName="EndDateTime" 494. Storyboard.TargetProperty="IsEnabled" 495. Duration="0"> 496. <DiscreteObjectKeyFrame KeyTime="0" 497. Value="True" /> 498. </ObjectAnimationUsingKeyFrames> 499. <ObjectAnimationUsingKeyFrames Storyboard.TargetName="AllDayEventCheckbox" 500. Storyboard.TargetProperty="IsEnabled" 501. Duration="0"> 502. <DiscreteObjectKeyFrame KeyTime="0" 503. Value="True" /> 504. </ObjectAnimationUsingKeyFrames> 505. </Storyboard> 506. </vsm:VisualState> 507. <vsm:VisualState x:Name="RecurrenceRuleIsNotNull"> 508. <Storyboard> 509. <ObjectAnimationUsingKeyFrames Storyboard.TargetName="StartDateTime" 510. Storyboard.TargetProperty="IsEnabled" 511. Duration="0"> 512. <DiscreteObjectKeyFrame KeyTime="0" 513. Value="False" /> 514. </ObjectAnimationUsingKeyFrames> 515. <ObjectAnimationUsingKeyFrames Storyboard.TargetName="EndDateTime" 516. Storyboard.TargetProperty="IsEnabled" 517. Duration="0"> 518. <DiscreteObjectKeyFrame KeyTime="0" 519. Value="False" /> 520. </ObjectAnimationUsingKeyFrames> 521. <ObjectAnimationUsingKeyFrames Storyboard.TargetName="AllDayEventCheckbox" 522. Storyboard.TargetProperty="IsEnabled" 523. Duration="0"> 524. <DiscreteObjectKeyFrame KeyTime="0" 525. Value="False" /> 526. </ObjectAnimationUsingKeyFrames> 527. </Storyboard> 528. </vsm:VisualState> 529. </vsm:VisualStateGroup> 530. </vsm:VisualStateManager.VisualStateGroups> 531. </StackPanel> 532. </ControlTemplate> 533. <DataTemplate x:Key="AppointmentDialogWindowHeaderDataTemplate"> 534. <StackPanel Orientation="Horizontal" 535. MaxWidth="400"> 536. <TextBlock telerik:LocalizationManager.ResourceKey="Event" 537. Visibility="{Binding Appointment.IsAllDayEvent, Converter={StaticResource BooleanToVisibilityConverter}}" /> 538. <TextBlock telerik:LocalizationManager.ResourceKey="Appointment" 539. Visibility="{Binding Appointment.IsAllDayEvent, Converter={StaticResource InvertedBooleanToVisibilityConverter}}" /> 540. <TextBlock Text=" - " /> 541. <TextBlock x:Name="SubjectTextBlock" 542. Visibility="{Binding Appointment.Subject, Converter={StaticResource NullToVisibilityConverter}}" 543. Text="{Binding Appointment.Subject}" /> 544. <TextBlock telerik:LocalizationManager.ResourceKey="Untitled" 545. Visibility="{Binding Appointment.Subject, Converter={StaticResource InvertedNullToVisibilityConverter}}" /> 546. </StackPanel> 547. </DataTemplate> 548. <Style x:Key="EditAppointmentStyle" 549. TargetType="telerikScheduler:AppointmentDialogWindow"> 550. <Setter Property="IconTemplate" 551. Value="{StaticResource IconDataEditTemplate}" /> 552. <Setter Property="HeaderTemplate" 553. Value="{StaticResource AppointmentDialogWindowHeaderDataTemplate}" /> 554. <Setter Property="Background" 555. Value="{StaticResource DialogWindowBackground}" /> 556. <Setter Property="Template" 557. Value="{StaticResource EditAppointmentTemplate}" /> 558. </Style> 559.</UserControl.Resources> The first line there is the DataContextProxy I mentioned previously- we use that again to work a bit of magic in this template. Where we start getting into the dialog in question is line 132, but line 407 is where things start getting interesting. The ItemsSource is pointing at a list that exists in my ViewModel (or code-behind, if it is used as a DataContext), the SelectedValue is the item I am actually binding from the applicant (note the TwoWay binding), and SelectedValuePath and DisplayMemberPath ensure the proper applicant is being displayed from the collection. You will also see similar starting on line 420 where I do the same for the Jobs we'll be displaying. Just to wrap-up the Xaml, here's the RadScheduler declaraction that ties this all together and will be the main focus of our view: 01.<telerikScheduler:RadScheduler x:Name="xJobsScheduler" 02. Grid.Row="1" 03. Grid.Column="1" 04. Width="800" 05. MinWidth="600" 06. Height="500" 07. MinHeight="300" 08. AppointmentsSource="{Binding Interviews}" 09. EditAppointmentStyle="{StaticResource EditAppointmentStyle}" 10. command:AppointmentAddedEventClass.Command="{Binding AddAppointmentCommand}" 11. command:ApptCreatedEventClass.Command="{Binding ApptCreatingCommand}" 12. command:ApptEditedEventClass.Command="{Binding ApptEditedCommand}" 13. command:ApptDeletedEventClass.Command="{Binding ApptDeletedCommand}"> 14.</telerikScheduler:RadScheduler> Now, we get to the ViewModel and what it takes to get that rigged up. And for those of you who remember the jobs post, those command:s in the Xaml are pointing to attached behavior commands that reproduce the respective events. This becomes very handy when we're setting up the code-behind version. ;) ViewModel I've been liking this approach so far, so I'm going to put the entire ViewModel here and then go into the lines of interest. Of course, feel free to ask me questions about anything that isn't clear (by line number, ideally) so I can help out if I have missed anything important: 001.public class SchedulerViewModel : ViewModelBase 002.{ 003. private readonly IEventAggregator eventAggregator; 004. private readonly IRegionManager regionManager; 005. 006. public RecruitingContext context; 007. 008. private ObservableItemCollection<InterviewAppointment> _interviews = new ObservableItemCollection<InterviewAppointment>(); 009. public ObservableItemCollection<InterviewAppointment> Interviews 010. { 011. get { return _interviews; } 012. set 013. { 014. if (_interviews != value) 015. { 016. _interviews = value; 017. NotifyChanged("Interviews"); 018. } 019. } 020. } 021. 022. private QueryableCollectionView _jobsList; 023. public QueryableCollectionView JobsList 024. { 025. get { return this._jobsList; } 026. set 027. { 028. if (this._jobsList != value) 029. { 030. this._jobsList = value; 031. this.NotifyChanged("JobsList"); 032. } 033. } 034. } 035. 036. private QueryableCollectionView _applicantList; 037. public QueryableCollectionView ApplicantList 038. { 039. get { return _applicantList; } 040. set 041. { 042. if (_applicantList != value) 043. { 044. _applicantList = value; 045. NotifyChanged("ApplicantList"); 046. } 047. } 048. } 049. 050. public DelegateCommand<object> AddAppointmentCommand { get; set; } 051. public DelegateCommand<object> ApptCreatingCommand { get; set; } 052. public DelegateCommand<object> ApptEditedCommand { get; set; } 053. public DelegateCommand<object> ApptDeletedCommand { get; set; } 054. 055. public SchedulerViewModel(IEventAggregator eventAgg, IRegionManager regionmanager) 056. { 057. // set Unity items 058. this.eventAggregator = eventAgg; 059. this.regionManager = regionmanager; 060. 061. // load our context 062. context = new RecruitingContext(); 063. LoadOperation<Interview> loadOp = context.Load(context.GetInterviewsQuery()); 064. loadOp.Completed += new EventHandler(loadOp_Completed); 065. 066. this._jobsList = new QueryableCollectionView(context.JobPostings); 067. context.Load(context.GetJobPostingsQuery()); 068. 069. this._applicantList = new QueryableCollectionView(context.Applicants); 070. context.Load(context.GetApplicantsQuery()); 071. 072. AddAppointmentCommand = new DelegateCommand<object>(this.AddAppt); 073. ApptCreatingCommand = new DelegateCommand<object>(this.ApptCreating); 074. ApptEditedCommand = new DelegateCommand<object>(this.ApptEdited); 075. ApptDeletedCommand = new DelegateCommand<object>(this.ApptDeleted); 076. 077. } 078. 079. void loadOp_Completed(object sender, EventArgs e) 080. { 081. LoadOperation loadop = sender as LoadOperation; 082. 083. foreach (var ent in loadop.Entities) 084. { 085. _interviews.Add(EntityToAppointment(ent as Interview)); 086. } 087. } 088. 089. #region Appointment Adding 090. 091. public void AddAppt(object obj) 092. { 093. // now we have a new InterviewAppointment to add to our QCV :) 094. InterviewAppointment newInterview = obj as InterviewAppointment; 095. 096. this.context.Interviews.Add(AppointmentToEntity(newInterview)); 097. this.context.SubmitChanges((s) => 098. { 099. ActionHistory myAction = new ActionHistory(); 100. myAction.InterviewID = newInterview.InterviewID; 101. myAction.PostingID = newInterview.PostingID; 102. myAction.ApplicantID = newInterview.ApplicantID; 103. myAction.Description = String.Format("Interview with {0} has been created by {1}", newInterview.ApplicantID.ToString(), "default user"); 104. myAction.TimeStamp = DateTime.Now; 105. eventAggregator.GetEvent<AddActionEvent>().Publish(myAction); 106. } 107. , null); 108. } 109. 110. public void ApptCreating(object obj) 111. { 112. // handled in the behavior, just a placeholder to ensure it runs :) 113. } 114. 115. #endregion 116. 117. #region Appointment Editing 118. 119. public void ApptEdited(object obj) 120. { 121. Interview editedInterview = (from x in context.Interviews 122. where x.InterviewID == (obj as InterviewAppointment).InterviewID 123. select x).SingleOrDefault(); 124. 125. CopyAppointmentEdit(editedInterview, obj as InterviewAppointment); 126. 127. context.SubmitChanges((s) => { 128. ActionHistory myAction = new ActionHistory(); 129. myAction.InterviewID = editedInterview.InterviewID; 130. myAction.PostingID = editedInterview.PostingID; 131. myAction.ApplicantID = editedInterview.ApplicantID; 132. myAction.Description = String.Format("Interview with {0} has been modified by {1}", editedInterview.ApplicantID.ToString(), "default user"); 133. myAction.TimeStamp = DateTime.Now; 134. eventAggregator.GetEvent<AddActionEvent>().Publish(myAction); } 135. , null); 136. } 137. 138. #endregion 139. 140. #region Appointment Deleting 141. 142. public void ApptDeleted(object obj) 143. { 144. Interview deletedInterview = (from x in context.Interviews 145. where x.InterviewID == (obj as InterviewAppointment).InterviewID 146. select x).SingleOrDefault(); 147. 148. context.Interviews.Remove(deletedInterview); 149. context.SubmitChanges((s) => 150. { 151. ActionHistory myAction = new ActionHistory(); 152. myAction.InterviewID = deletedInterview.InterviewID; 153. myAction.PostingID = deletedInterview.PostingID; 154. myAction.ApplicantID = deletedInterview.ApplicantID; 155. myAction.Description = String.Format("Interview with {0} has been deleted by {1}", deletedInterview.ApplicantID.ToString(), "default user"); 156. myAction.TimeStamp = DateTime.Now; 157. eventAggregator.GetEvent<AddActionEvent>().Publish(myAction); 158. } 159. , null); 160. } 161. 162. #endregion 163. 164. #region Appointment Helpers :) 165. 166. public Interview AppointmentToEntity(InterviewAppointment ia) 167. { 168. Interview newInterview = new Interview(); 169. newInterview.Subject = ia.Subject; 170. newInterview.Body = ia.Body; 171. newInterview.Start = ia.Start; 172. newInterview.End = ia.End; 173. newInterview.ApplicantID = ia.ApplicantID; 174. newInterview.PostingID = ia.PostingID; 175. newInterview.InterviewID = ia.InterviewID; 176. 177. return newInterview; 178. } 179. 180. public InterviewAppointment EntityToAppointment(Interview ia) 181. { 182. InterviewAppointment newInterview = new InterviewAppointment(); 183. newInterview.Subject = ia.Subject; 184. newInterview.Body = ia.Body; 185. newInterview.Start = ia.Start; 186. newInterview.End = ia.End; 187. newInterview.ApplicantID = ia.ApplicantID; 188. newInterview.PostingID = ia.PostingID; 189. newInterview.InterviewID = ia.InterviewID; 190. 191. return newInterview; 192. } 193. 194. public void CopyAppointmentEdit(Interview entityInterview, InterviewAppointment appointmentInterview) 195. { 196. entityInterview.Subject = appointmentInterview.Subject; 197. entityInterview.Body = appointmentInterview.Body; 198. entityInterview.Start = appointmentInterview.Start; 199. entityInterview.End = appointmentInterview.End; 200. entityInterview.ApplicantID = appointmentInterview.ApplicantID; 201. entityInterview.PostingID = appointmentInterview.PostingID; 202. } 203. 204. #endregion 205.} One thing we're doing here which you won't see in any of the other ViewModels is creating a duplicate collection. I know this is something which will be fixed down the line for using RadScheduler, simplifying this process, but with WCF RIA changing as it does I wanted to ensure functionality would remain consistent as I continued development on this application. So, I do a little bit of duplication, but for the greater good. This all takes place starting on line 79, so for every entity that comes back we add it to the collection that is bound to RadScheduler. Otherwise, the DelegateCommands that you see correspond directly to the events they are named after. In each case, rather than sending over the full event arguments, I just send in the appointment in question (coming through as the object obj in all cases) so I can add (line 91), edit (line 119), and delete appointments (line 142) like normal. This just ensures they get updated back to my database. Also, the one bit of code you won't see is for the Appointment Creating (line 110) event- that is because in the command I've created I simply make the replacement I need to: 1.void element_AppointmentCreating(object sender, AppointmentCreatingEventArgs e) 2.{ 3. e.NewAppointment = new InterviewAppointment(); 4. base.ExecuteCommand(); 5.} And the ViewModel is none the wiser, the appointments just work as far as it is concerned since as they are created they become InterviewAppointments. End result? I've customized my EditAppointmentDialog as follows: And adding, editing, and deleting appointments works like a charm. I can even 'edit' by moving appointments around RadScheduler, so as they are dropped into a timeslot they perform their full edit routine and things get updated. And then, the Code-Behind Version Perhaps the thing I like the most about doing one then the other is I get to steal 90% or more of the code from the MVVM version. For example, the only real changes to the Code-Behind Xaml file exist in the control declaration, in which I use events instead of attached-behavior-event-commands: 01.<telerikScheduler:RadScheduler x:Name="xJobsScheduler" 02. Grid.Row="1" 03. Grid.Column="1" 04. Width="800" 05. MinWidth="600" 06. Height="500" 07. MinHeight="300" 08. EditAppointmentStyle="{StaticResource EditAppointmentStyle}" 09. AppointmentAdded="xJobsScheduler_AppointmentAdded" 10. AppointmentCreating="xJobsScheduler_AppointmentCreating" 11. AppointmentEdited="xJobsScheduler_AppointmentEdited" 12. AppointmentDeleted="xJobsScheduler_AppointmentDeleted"> 13.</telerikScheduler:RadScheduler> Easy, right? Otherwise, all the same styling in UserControl.Resources was re-used, right down to the DataContextProxy that lets us bind to a collection from our viewmodel (in this case, our code-behind) to use within the DataTemplate. The code conversion gets even easier, as I could literally copy and paste almost everything from the ViewModel to my Code-Behind, just a matter of pasting the right section into the right event. Here's the code-behind as proof: 001.public partial class SchedulingView : UserControl, INotifyPropertyChanged 002.{ 003. public RecruitingContext context; 004. 005. private QueryableCollectionView _jobsList; 006. public QueryableCollectionView JobsList 007. { 008. get { return this._jobsList; } 009. set 010. { 011. if (this._jobsList != value) 012. { 013. this._jobsList = value; 014. this.NotifyChanged("JobsList"); 015. } 016. } 017. } 018. 019. private QueryableCollectionView _applicantList; 020. public QueryableCollectionView ApplicantList 021. { 022. get { return _applicantList; } 023. set 024. { 025. if (_applicantList != value) 026. { 027. _applicantList = value; 028. NotifyChanged("ApplicantList"); 029. } 030. } 031. } 032. 033. private ObservableItemCollection<InterviewAppointment> _interviews = new ObservableItemCollection<InterviewAppointment>(); 034. public ObservableItemCollection<InterviewAppointment> Interviews 035. { 036. get { return _interviews; } 037. set 038. { 039. if (_interviews != value) 040. { 041. _interviews = value; 042. NotifyChanged("Interviews"); 043. } 044. } 045. } 046. 047. public SchedulingView() 048. { 049. InitializeComponent(); 050. 051. this.DataContext = this; 052. 053. this.Loaded += new RoutedEventHandler(SchedulingView_Loaded); 054. } 055. 056. void SchedulingView_Loaded(object sender, RoutedEventArgs e) 057. { 058. this.xJobsScheduler.AppointmentsSource = Interviews; 059. 060. context = new RecruitingContext(); 061. 062. LoadOperation loadop = context.Load(context.GetInterviewsQuery()); 063. loadop.Completed += new EventHandler(loadop_Completed); 064. 065. this._applicantList = new QueryableCollectionView(context.Applicants); 066. context.Load(context.GetApplicantsQuery()); 067. 068. this._jobsList = new QueryableCollectionView(context.JobPostings); 069. context.Load(context.GetJobPostingsQuery()); 070. } 071. 072. void loadop_Completed(object sender, EventArgs e) 073. { 074. LoadOperation loadop = sender as LoadOperation; 075. 076. _interviews.Clear(); 077. 078. foreach (var ent in loadop.Entities) 079. { 080. _interviews.Add(EntityToAppointment(ent as Interview)); 081. } 082. } 083. 084. private void xJobsScheduler_AppointmentAdded(object sender, Telerik.Windows.Controls.AppointmentAddedEventArgs e) 085. { 086. // now we have a new InterviewAppointment to add to our QCV :) 087. InterviewAppointment newInterview = e.Appointment as InterviewAppointment; 088. 089. this.context.Interviews.Add(AppointmentToEntity(newInterview)); 090. this.context.SubmitChanges((s) => 091. { 092. ActionHistory myAction = new ActionHistory(); 093. myAction.InterviewID = newInterview.InterviewID; 094. myAction.PostingID = newInterview.PostingID; 095. myAction.ApplicantID = newInterview.ApplicantID; 096. myAction.Description = String.Format("Interview with {0} has been created by {1}", newInterview.ApplicantID.ToString(), "default user"); 097. myAction.TimeStamp = DateTime.Now; 098. context.ActionHistories.Add(myAction); 099. context.SubmitChanges(); 100. } 101. , null); 102. } 103. 104. private void xJobsScheduler_AppointmentCreating(object sender, Telerik.Windows.Controls.AppointmentCreatingEventArgs e) 105. { 106. e.NewAppointment = new InterviewAppointment(); 107. } 108. 109. private void xJobsScheduler_AppointmentEdited(object sender, Telerik.Windows.Controls.AppointmentEditedEventArgs e) 110. { 111. Interview editedInterview = (from x in context.Interviews 112. where x.InterviewID == (e.Appointment as InterviewAppointment).InterviewID 113. select x).SingleOrDefault(); 114. 115. CopyAppointmentEdit(editedInterview, e.Appointment as InterviewAppointment); 116. 117. context.SubmitChanges((s) => 118. { 119. ActionHistory myAction = new ActionHistory(); 120. myAction.InterviewID = editedInterview.InterviewID; 121. myAction.PostingID = editedInterview.PostingID; 122. myAction.ApplicantID = editedInterview.ApplicantID; 123. myAction.Description = String.Format("Interview with {0} has been modified by {1}", editedInterview.ApplicantID.ToString(), "default user"); 124. myAction.TimeStamp = DateTime.Now; 125. context.ActionHistories.Add(myAction); 126. context.SubmitChanges(); 127. } 128. , null); 129. } 130. 131. private void xJobsScheduler_AppointmentDeleted(object sender, Telerik.Windows.Controls.AppointmentDeletedEventArgs e) 132. { 133. Interview deletedInterview = (from x in context.Interviews 134. where x.InterviewID == (e.Appointment as InterviewAppointment).InterviewID 135. select x).SingleOrDefault(); 136. 137. context.Interviews.Remove(deletedInterview); 138. context.SubmitChanges((s) => 139. { 140. ActionHistory myAction = new ActionHistory(); 141. myAction.InterviewID = deletedInterview.InterviewID; 142. myAction.PostingID = deletedInterview.PostingID; 143. myAction.ApplicantID = deletedInterview.ApplicantID; 144. myAction.Description = String.Format("Interview with {0} has been deleted by {1}", deletedInterview.ApplicantID.ToString(), "default user"); 145. myAction.TimeStamp = DateTime.Now; 146. context.ActionHistories.Add(myAction); 147. context.SubmitChanges(); 148. } 149. , null); 150. } 151. 152. #region Appointment Helpers :) 153. 154. public Interview AppointmentToEntity(InterviewAppointment ia) 155. { 156. Interview newInterview = new Interview(); 157. newInterview.Subject = ia.Subject; 158. newInterview.Body = ia.Body; 159. newInterview.Start = ia.Start; 160. newInterview.End = ia.End; 161. newInterview.ApplicantID = ia.ApplicantID; 162. newInterview.PostingID = ia.PostingID; 163. newInterview.InterviewID = ia.InterviewID; 164. 165. return newInterview; 166. } 167. 168. public InterviewAppointment EntityToAppointment(Interview ia) 169. { 170. InterviewAppointment newInterview = new InterviewAppointment(); 171. newInterview.Subject = ia.Subject; 172. newInterview.Body = ia.Body; 173. newInterview.Start = ia.Start; 174. newInterview.End = ia.End; 175. newInterview.ApplicantID = ia.ApplicantID; 176. newInterview.PostingID = ia.PostingID; 177. newInterview.InterviewID = ia.InterviewID; 178. 179. return newInterview; 180. } 181. 182. public void CopyAppointmentEdit(Interview entityInterview, InterviewAppointment appointmentInterview) 183. { 184. entityInterview.Subject = appointmentInterview.Subject; 185. entityInterview.Body = appointmentInterview.Body; 186. entityInterview.Start = appointmentInterview.Start; 187. entityInterview.End = appointmentInterview.End; 188. entityInterview.ApplicantID = appointmentInterview.ApplicantID; 189. entityInterview.PostingID = appointmentInterview.PostingID; 190. } 191. 192. #endregion 193. 194. #region INotifyPropertyChanged Members 195. 196. public event PropertyChangedEventHandler PropertyChanged; 197. 198. public void NotifyChanged(string propertyName) 199. { 200. if (string.IsNullOrEmpty(propertyName)) 201. throw new ArgumentException("propertyName"); 202. 203. PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); 204. } 205. 206. #endregion 207.} Nice... right? :) One really important thing to note as well. See on line 51 where I set the DataContext before the Loaded event? This is super important, as if you don't have this set before the usercontrol is loaded, the DataContextProxy has no context to use and your EditAppointmentDialog Job/Applicant dropdowns will be blank and empty. Trust me on this, took a little bit of debugging to figure out that by setting the DataContext post-loaded would only lead to disaster and frustration. Otherwise, the only other real difference is that instead of sending an ActionHistory item through an event to get added to the database and saved, I do those right in the callback from submitting. The Result Again, I only have to post one picture because these bad boys used nearly identical code for both the MVVM and the code-behind views, so our end result is... So what have we learned here today? One, for the most part this MVVM thing is somewhat easy. Yeah, you sometimes have to write a bunch of extra code, but with the help of a few useful snippits you can turn the process into a pretty streamlined little workflow. Heck, this story gets even easier as you can see in this blog post by Michael Washington- specifically run a find on 'InvokeCommandAction' and you'll see the section regarding the command on TreeView in Blend 4. Brilliant! MVVM never looked so sweet! Otherwise, it is business as usual with RadScheduler for Silverlight whichever path you're choosing for your development. Between now and the next post, I'll be cleaning up styles a bit (those RadComboBoxes are a little too close to my labels!) and adding some to the RowDetailsViews for Applicants and Jobs, so you can see all the info for an appointment in the dropdown tab view. Otherwise, we're about ready to call a wrap on this oneDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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