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• CodePlex Daily Summary for Sunday, November 03, 2013

  CodePlex Daily Summary for Sunday, November 03, 2013Popular ReleasesuComponents: uComponents v6.0.0: This release of uComponents will compile against and support the new API in Umbraco v6.1.0. What's new in uComponents v6.0.0? New DataTypesImage Point XML DropDownList XPath Templatable List New features / Resolved issuesThe following workitems have been implemented and/or resolved: 14781 14805 14808 14818 14854 14827 14868 14859 14790 14853 14790 DataType Grid 14788 14810 14873 14833 14864 14855 / 14860 14816 14823 Drag & Drop support for rows Su...SmartStore.NET - Free ASP.NET MVC Ecommerce Shopping Cart Solution: SmartStore.NET 1.2.1: New FeaturesAdded option Limit to current basket subtotal to HadSpentAmount discount rule Items in product lists can be labelled as NEW for a configurable period of time Product templates can optionally display a discount sign when discounts were applied Added the ability to set multiple favicons depending on stores and/or themes Plugin management: multiple plugins can now be (un)installed in one go Added a field for the HTML body id to store entity (Developer) New property 'Extra...WPF Extended DataGrid: WPF Extended DataGrid 2.0.0.9 binaries: Fixed issue with ICollectionView containg null values (AutoFilter issue)Community TFS Build Extensions: October 2013: The October 2013 release contains Scripts - a new addition to our delivery. These are a growing library of PowerShell scripts to use with VS2013. See our documentation for more on scripting. VS2010 Activities(target .NET 4.0) VS2012 Activities (target .NET 4.5) VS2013 Activities (target .NET 4.5.1) Community TFS Build Manager VS2012 Community TFS Build Manager VS2013 The Community TFS Build Managers for VS2010, 2012 and 2013 can also be found in the Visual Studio Gallery where upda...WMI Inventory Client: WMI Inventory Client: WMI Inventory Client ?????????????? ?????????????? ?? WMISuperSocket, an extensible socket server framework: SuperSocket 1.6 stable: Changes included in this release: Process level isolation SuperSocket ServerManager (include server and client) Connect to client from server side initiatively Client certificate validation New configuration attributes "textEncoding", "defaultCulture", and "storeLocation" (certificate node) Many bug fixes http://docs.supersocket.net/v1-6/en-US/New-Features-and-Breaking-ChangesFile System Explorer: Beta 1: Try me and please give feedback via Discussions and issues Installation: Download the zip file Unblock it Unzip to a suitable location Just run Filesystemexplorer.exe Enjoy Updates: V1.1 Beta: Fixed some low level file search issuesBarbaTunnel: BarbaTunnel 8.1: Check Version History for more information about this release.Mugen MVVM Toolkit: Mugen MVVM Toolkit 2.1: v 2.1 Added the 'Should' class instead of the 'Validate' class. The 'Validate' class is now obsolete. Added 'Toolkit.Annotations' to support the Mugen MVVM Toolkit ReSharper plugin. Updated JetBrains annotations within the project. Added the 'GlobalSettings.DefaultActivationPolicy' property to represent the default activation policy. Removed the 'GetSettings' method from the 'ViewModelBase' class. Instead of it, the 'GlobalSettings.DefaultViewModelSettings' property is used. Updated...SharePoint User Permission Check: SP User Permission Check: Modified Current.Web.Title in output label.TFS Event Workflows: TFS Event Workflows 0.10.41576.0 - TFS 2012-2013: Supports TFS 2012 and TFS 2013 For a TFS 2010 version look at https://tfseventworkflows.codeplex.com/releases/view/102444 New Features multiple application tiers storage of workflows, configurations and activities in the version control support for async execution in TFS job agent selection of collection/project filters in config file simple disable in config file simplified configurationCrowd CMS: Crowd CMS FREE - Official Release: This is the original source files for Crowd CMS Free (v1.0.0) and is the latest stable release which has been bug-tested and fixed.Sea Dragon AJAX Viewer Web Part: Sea Dragon Ajax Web Part: The Seadragon Viewer WSP and companion literature. There are three seperate guides that explain how to get up and running: - Seadragon Viewer Web Part Installation Guide Creating Deep Zoom Images for Seadragon Viewer Bringing it all together These guides are currently very basic and are offered as guides for getting full usage out Seadragon. Please post any suggestions for further documentation in the discussions forumProject Nonnon: 2013_10_30: ----------==========----------==========----------==========---------- "No news is good news." ----------==========----------==========----------==========---------- Change Log 2013/10/30 BUGFIX win32/explorer.c n_explorer_path_get() : comment OLD : typo NEW : fixed Felis Win8 or latert : Link Maker OLD : not function in some cases NEW : fixed Nyaurism Formatter : byte count label : when resized OLD : text will be broken NEW : fixed NEW_FEATURE win...NAudio: NAudio 1.7: full release notes available at http://mark-dot-net.blogspot.co.uk/2013/10/naudio-17-release-notes.htmlFormula Calculation Toolkit: FCT Library: Alfa release for Formula Calculation Toolkit.WebExtras: v1.3.0 Beta: Enh: Adding support for Bootstrap 3.x Enh: Adding support for Gumby 2.5.x Enh: Adding a new string extension Remove() to remove occurences of given string Enh: Adding a ToDictionary() for name value collections Enh: The dataTable sort extension is now a little more intelligent and robust Enh: General under the hood code enhancements Fix: Hyperlink extensions now handle MVC Areas Fix: Marking JsFunc as serializable otherwise when using the ASP.NET State Server, the object does no...DirectX Tool Kit: October 2013: October 28, 2013 Updated for Visual Studio 2013 and Windows 8.1 SDK RTM Added DGSLEffect, DGSLEffectFactory, VertexPositionNormalTangentColorTexture, and VertexPositionNormalTangentColorTextureSkinning Model loading and effect factories support loading skinned models MakeSpriteFont now has a smooth vs. sharp antialiasing option: /sharp Model loading from CMOs now handles UV transforms for texture coordinates A number of small fixes for EffectFactory Minor code and project cleanup ...ExtJS based ASP.NET Controls: FineUI v4.0beta1: +2013-10-28 v4.0 beta1 +?????Collapsed???????????????。 -????：window/group_panel.aspx??，???????，???????，?????????。 +??????SelectedNodeIDArray???????????????。 -????：tree/checkbox/tree_checkall.aspx??，?????，?????，????????????。 -??TimerPicker???????（????、????ing）。 -??????????????????????（???）。 -?????????????，??type=text/css（??~`）。 -MsgTarget???MessageTarget，???None。 -FormOffsetRight?????20px??5px。 -?Web.config?PageManager??FormLabelAlign???。 -ToolbarPosition??Left/Right。 -??Web.conf...CODE Framework: 4.0.31028.0: See change notes in the documentation section for details on what's new. Note: If you download the class reference help file with, you have to right-click the file, pick "Properties", and then unblock the file, as many browsers flag the file as blocked during download (for security reasons) and thus hides all content.New Projects.NET Site Storage: Write .NET code to use an abstract storage system that can work with a variety of storage, such as local file system and Azure blob.Asp.net Mvc Ajax Infinite Scroll: Asp.net Mvc 4 Ajax Json Infinite Scrollblueblue: tetCar: CArCSharp Generic Data Access: Yet another generic data access for .NETDotNet Manuals: DotNet Manuals aims to provide developers an easy way to create, manage and distribute manuals and various documentation for their applications and libraries.EIB Watcher .Net Library: .Net Library for EIB/NKX bus accessopenGamification: This intends to become an open source gamification framework based on TypeScript.PaginaWebCursoNetAcc: aSimple Person Manager: The application accepts POST requests with JSON data about a Person, stored the values in Azure Table Storage and accepts GET requests to retrieve it back.Stock Track: If you have a small retail store with simple stock management and tracking requirements, this program might work for you. Stock Track easily categorises your ptrapawebapp: testVisualStateManager: This is a simple, but quite powerful mechanism allowing you to separate the application UI from application logic in Windows Forms.Yet Another VirtualBox ToolSet: This is going to be another VirtualBox Toolset.Zodinet: Co ca ngua

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• C#, Delegates and LINQ

  - by JustinGreenwood

  One of the topics many junior programmers struggle with is delegates. And today, anonymous delegates and lambda expressions are profuse in .net APIs.  To help some VB programmers adapt to C# and the many equivalent flavors of delegates, I walked through some simple samples to show them the different flavors of delegates. using System; using System.Collections.Generic; using System.Linq; namespace DelegateExample { class Program { public delegate string ProcessStringDelegate(string data); public static string ReverseStringStaticMethod(string data) { return new String(data.Reverse().ToArray()); } static void Main(string[] args) { var stringDelegates = new List<ProcessStringDelegate> { //========================================================== // Declare a new delegate instance and pass the name of the method in new ProcessStringDelegate(ReverseStringStaticMethod), //========================================================== // A shortcut is to just and pass the name of the method in ReverseStringStaticMethod, //========================================================== // You can create an anonymous delegate also delegate (string inputString) //Scramble { var outString = inputString; if (!string.IsNullOrWhiteSpace(inputString)) { var rand = new Random(); var chs = inputString.ToCharArray(); for (int i = 0; i < inputString.Length * 3; i++) { int x = rand.Next(chs.Length), y = rand.Next(chs.Length); char c = chs[x]; chs[x] = chs[y]; chs[y] = c; } outString = new string(chs); } return outString; }, //========================================================== // yet another syntax would be the lambda expression syntax inputString => { // ROT13 var array = inputString.ToCharArray(); for (int i = 0; i < array.Length; i++) { int n = (int)array[i]; n += (n >= 'a' && n <= 'z') ? ((n > 'm') ? 13 : -13) : ((n >= 'A' && n <= 'Z') ? ((n > 'M') ? 13 : -13) : 0); array[i] = (char)n; } return new string(array); } //========================================================== }; // Display the results of the delegate calls var stringToTransform = "Welcome to the jungle!"; System.Console.ForegroundColor = ConsoleColor.Cyan; System.Console.Write("String to Process: "); System.Console.ForegroundColor = ConsoleColor.Yellow; System.Console.WriteLine(stringToTransform); stringDelegates.ForEach(delegatePointer => { System.Console.WriteLine(); System.Console.ForegroundColor = ConsoleColor.Cyan; System.Console.Write("Delegate Method Name: "); System.Console.ForegroundColor = ConsoleColor.Magenta; System.Console.WriteLine(delegatePointer.Method.Name); System.Console.ForegroundColor = ConsoleColor.Cyan; System.Console.Write("Delegate Result: "); System.Console.ForegroundColor = ConsoleColor.White; System.Console.WriteLine(delegatePointer(stringToTransform)); }); System.Console.ReadKey(); } } } The output of the program is below: String to Process: Welcome to the jungle! Delegate Method Name: ReverseStringStaticMethod Delegate Result: !elgnuj eht ot emocleW Delegate Method Name: ReverseStringStaticMethod Delegate Result: !elgnuj eht ot emocleW Delegate Method Name: b__1 Delegate Result: cg ljotWotem!le une eh Delegate Method Name: b__2 Delegate Result: dX_V|`X ?| ?[X ]?{Z_X!

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• CodePlex Daily Summary for Wednesday, October 24, 2012

  CodePlex Daily Summary for Wednesday, October 24, 2012Popular ReleasesfastJSON: v2.0.9: - added support for root level DataSet and DataTable deserialize (you have to do ToObject<DataSet>(...) ) - added dataset testsInfo Gempa BMKG: Info Gempa BMKG v 1.0.0.3: Release perdana aplikasi pembaca informasi gempa dari data feeder BMKG.Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.72: Fix for Issue #18819 - bad optimization of return/assign operator.DNN Module Creator: 01.01.00: Updated templates for DNN7 ( ie. DAL2, Web Service API ). Numerous bug fixes and enhancements.WPF Application Framework (WAF): WPF Application Framework (WAF) 2.5.0.390: Version 2.5.0.390 (Release Candidate): This release contains the source code of the WPF Application Framework (WAF) and the sample applications. Requirements .NET Framework 4.0 (The package contains a solution file for Visual Studio 2010) The unit test projects require Visual Studio 2010 Professional Changelog Legend: [B] Breaking change; [O] Marked member as obsolete WAF: Fix recent file list remove issue. WAF: Minor code improvements. BookLibrary: Fix Blend design time support o...ltxml.js - LINQ to XML for JavaScript: 1.0 - Beta 1: First release!ZXMAK2: Version 2.6.6.0: + fix refresh debugger after open RZX file + add NoFlic video filterEPiServer CMS ElencySolutions.MultipleProperty: ElencySolutions.MultipleProperty v1.6.3: The ElencySolutions.MulitpleProperty property controls have been developed by Lee Crowe a technical developer at Fortune Cookie (London). Installation notes The property copy page can be locked down by adding the following location element, the path of this will be different depending on whether you use the embedded or non embedded resource version. When installing the nuget package these will be added automatically, examples below: Embedded: <location path="util/ElencySolutionsMultipleP...Fiskalizacija za developere: FiskalizacijaDev 1.1: Ovo je prva nadogradnja ovog projekta nakon inicijalnog predstavljanja - dodali smo nekoliko feature-a, bilo zato što smo sami primijetili da bi ih bilo dobro dodati, bilo na osnovu vaših sugestija - hvala svima koji su se ukljucili :) Ovo su stvari riješene u v1.1.: 1. Bilo bi dobro da se XML dokument koji se šalje u CIS može snimiti u datoteku (http://fiskalizacija.codeplex.com/workitem/612) 2. Podrška za COM DLL (VB6) (http://fiskalizacija.codeplex.com/workitem/613) 3. Podrška za DOS (unu...MCEBuddy 2.x: MCEBuddy 2.3.4: Changelog for 2.3.4 (32bit and 64bit) 1. Fixed a bug introduced in 2.3.3 that would cause HD recordings and recordings with multiple audio channels to fail. 2. Updated <encoder-unsupported> option to compare with all Audio tracks for videos with multiple audio tracks. 3. Fixed a bug with SRT and EDL files, when input and output directory are the same the files are not preserved.Liberty: v3.4.0.0 Release 20th October 2012: Change Log -Added -Halo 4 support (invincibility, ammo editing) -Reach A warning dialog now shows up when you first attempt to swap a weapon -Fixed -A few minor bugsFoxOS: Stable Fox: Stable Fox Versione 0.0.0.1 Richiede .NET Framework 3.5 o superioriDoctor Reg: Doctor Reg V1.0: Doctor Reg V1.0 PT-PTkv: kv 1.0: if it were any more stable it would be a barn.LINQ for C++: cpplinq-20121020: LINQ for C++ is an attempt to bring LINQ-like list manipulation to C++11. This release includes just the source code. What's new in this release: join range operators: Inner Joins two ranges using a key selector reverse range operator distinct range operator union_with range operator intersect_with range operator except range operator concat range operator sequence_equal range aggregator to_lookup range aggregator This is a sample on how to use cpplinq: #include "cpplinq.h...helferlein_Form: 02.03.05: Requirements.Net 4.0 DotNetNuke 05.06.07 or higher, maybe it works with lower versions, but I developed it on this one and tested it on DotNetNuke 06.02.00 as well helferlein_BabelFish version 01.01.03 - please upgrade this first! Issues fixed Fixed issue with all users from all portals are listed as Host users in the sender options (E-Mail Options - Sender - ALL Users Listed) Registered postback-button for Excel-Export on Form submission edit control Changed behaviour Due to some mis...ClosedXML - The easy way to OpenXML: ClosedXML 0.68.1: ClosedXML now resolves formulas! Yes it finally happened. If you call cell.Value and it has a formula the library will try to evaluate the formula and give you the result. For example: var wb = new XLWorkbook(); var ws = wb.AddWorksheet("Sheet1"); ws.Cell("A1").SetValue(1).CellBelow().SetValue(1); ws.Cell("B1").SetValue(1).CellBelow().SetValue(1); ws.Cell("C1").FormulaA1 = "\"The total value is: \" & SUM(A1:B2)"; var...Orchard Project: Orchard 1.6 RC: RELEASE NOTES This is the Release Candidate version of Orchard 1.6. You should use this version to prepare your current developments to the upcoming final release, and report problems. Please read our release notes for Orchard 1.6 RC: http://docs.orchardproject.net/Documentation/Orchard-1-6-Release-Notes Please do not post questions as reviews. Questions should be posted in the Discussions tab, where they will usually get promptly responded to. If you post a question as a review, you wil...Rawr: Rawr 5.0.1: This is the Downloadable WPF version of Rawr!For web-based version see http://elitistjerks.com/rawr.php You can find the version notes at: http://rawr.codeplex.com/wikipage?title=VersionNotes Rawr Addon (NOT UPDATED YET FOR MOP)We now have a Rawr Official Addon for in-game exporting and importing of character data hosted on Curse. The Addon does not perform calculations like Rawr, it simply shows your exported Rawr data in wow tooltips and lets you export your character to Rawr (including ba...Yahoo! UI Library: YUI Compressor for .Net: Version 2.1.1.0 - Sartha (BugFix): - Revered back the embedding of the 2x assemblies.New ProjectsASP.NET DatePicker (Persian/Gregorian): This is just another DatePicker for ASP.NET that supports both Persian (Jalali/Shamsi/Solar) and Gregorian Calendar.AspectMap: AspectMap is an Aspect Oriented framework built on top of the StructureMap IoC framework.Building a Pinterest like Image Crawler: More about it here : http://www.alexpeta.ro/article/building-a-pinterest-like-image-crawlerCRM 2011 client scripting TypeScript definition file: xrm crm 2011 typescript javascript definition fileDarkSky Commerce: DarkSky Commerce is an Orchard module that provides a generic and extensible set of core commerce features and servicesDarkSky Learning: An Orchard module providing E-learning authoring tools and engines.Dusk Consulting: Dusk Consulting provides automation scripts to help IT Professionals and Developers alike.Edi: Edi is a an IDE based editor that is currently focused on text based editing (other editors may follow). This project is based on AvalonDock 2.0 and AvalonEdit.Entity Framework Extensions: This project includes extensions for the entity framework, includes unit of work pattern with event support, repository pattern with event support, and so on.EPiBoost (EPiServer 7 MVC Toolkit): Coming SoonExtended Guid: Easilly create version 5 guids. Converts an arbitrary string to a guid given a specific work area, or namespace.FileToText: pour la création de liste de fichierFilmBook, Film and Photo Archival Management: FilmBook is a simple image gallery and organization application. It's goal is to help identify the location of negatives in an archival page.FridgeBoard: Este proyecto está siendo realizado por alumnos de informática. No nos hacemos responsables de la mala calidad del mismo.GIV_P1: testyIQTool: Provide a set of tools to generate reports capturing the state of a server. This is written in powershell to allow easy modification / update of the scriptsLeaving Application System: have a good time.Leaving Management System: optimize work flow of staff work attendance managementltxml.js - LINQ to XML for JavaScript: ltxml.js is an XML processing library for JavaScript that is inspired by and largely similar to the LINQ to XML library for .NET.Microsoft .NET SDK For Hadoop: A collection of API's, tools and samples for using .NET with Apache Hadoop.MyLib: This is my personal library of various tidbits that I have been using regularly. Includes a generic repository with EF and MongoDB implementations.Parlez MVC: A multi-lingual implementation for the ASP.NET MVC 4 framework to make it easier to build websites that are viewable in different languages.Perfect Sport Nutrition: Proyecto realizado por la Empresa de Desarrollo Software SoftwareHC E.I.R.LScale Model Database: This project is a work of databasesSliding Block Puzzle: This is a simple (not very good) game for Windows Phone 7.1 (Mango). The point of it is to show off how to do different things in WP7.1.SmallBasic Extension Manager: SXM, or the SmallBasic Extension Manager, is a program intended for use with the Small Basic programming language from Microsoft.SQL Azure Federation Backup to Azure Blob Storage using Azure Worker: Azure Worker project, that will backup any number of Azure SQL Databases to any selected Azure Blob containers. Config in XML. Automatic 7z compression.TeF: A framework for running tests with a plenty of features and ease of use.Testge: testTwittOracle: This project is a prototype project intended to be submitted in a competition. The details will be updated later as things are finalized.uMembership - Alternative Umbraco Member Api: uMembership is an alternative and faster way of dealing with Members in Umbraco when you have 1000's or even 100Variedades Silverlight 5: Varidades Silverlight 5Website d?t tour du lich: Ð? án môn ASP.NET Xây d?ng website d?t tour du l?ch d?a trên mô hình MVCWPF About Box: WPF About Box is simple and free about box for WPF using MVVM pattern. Several properties can be set. Some properties are read from assembly, automatically.WTUnion: WTUnionXML Cleaner: Console app for batch cleaning XML files containing ilegal caracters. It can be useful for cleaning XML files before importing them to SOLR or something similarXmlToObject: XmlToObject is a .Net library for object serialization with use of XPath expressions applied to class fields and properties via custom attributes.XNAGalcon: This Project will create Galcon Game for XNA version

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• Looking into CSS3 Multiple backgrounds

  - by nikolaosk

  In this post I will be looking into a great feature in CSS3 called multiple backgrounds.With CSS3 ourselves as web designers we can specify multiple background images for box elements, using nothing more than a simple comma-separated list. This is a very nice feature that can be useful in many websites.In this hands-on example I will be using Expression Web 4.0.This application is not a free application. You can use any HTML editor you like.You can use Visual Studio 2012 Express edition. You can download it here.Before I go on with the actual demo I will use the (http://www.caniuse.com) to see the support for CSS 3 Multiple backgrounds from the latest versions of modern browsers.Please have a look in this link All modern browsers support this feature. I am typing this very simple HTML 5 markup with an internal CSS style.<!DOCTYPE html><html lang="en">  <head>    <title>Sold items</title>        <style>                #box{        border:1px solid #afafaf;        width:260px;        height:290px;        background-image:url(shirt.png), url(sold.jpg);        background-position: center bottom, right top;        background-repeat: no-repeat, no-repeat;    </style>    </head>  <body>    <header>                <h1>CSS3 Multiple backgrounds</h1>    </header>           <div id="box">              </div>        <footer>        <p>All Rights Reserved</p>      </footer>     </body>  </html>  Let me explain what I do here, multiple background images are specified using a comma-separated list of values for the background-image property.A comma separated list is also used for the other background properties such as background-repeat, background-position .So in the next three lines of CSS code         background-image:url(shirt.png), url(sold.jpg);        background-position: center bottom, right top;        background-repeat: no-repeat, no-repeat; we have 2 images placed in the div element. The first is placed center bottom in the div element and the second is placed at right top position inside the div element.Both images do not get repeated.I view the page in IE 10 and all the latest versions of Opera,Chrome and Firefox.Have a look at the picture below. Hope it helps!!!!

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• WF4 &ndash; Guess the number game!

  - by MarkPearl

  I posted yesterday how really good WF4 was looking. Today I thought I would show some real basics that I was able to figure out. This will be a simple example, I am going to make a flowchart workflow – which will prompt the user to guess the number until they guess the right number. Lets begin… Make a new project and make it a Workflow console Application. Then select the Workflow file and drag a FlowChart (2) to point 3. This will now show a green start circle in the designer form. We are going to work with primitives to start with. We are now going to drag a few objects onto the Workflow, We drag the WriteLine, Assign & Decision items onto the designer. Once they are dragged onto the designer we will want to link them up. The order that they are linked is critical since this will determine the order of the solution. In this case, we want the system to first ask “Guess a number”, then to wait for the user to input some code, and then to display “You got it” if they got it right, and “Try again” if they got it wrong. So we now link the arrows to the objects. This is done by moving the mouse pointer over the start objects and clicking on one of the toggles and then dragging it to the next object and releasing the button over one of the toggles. This will place an arrow from the source object to the target object. Okay… pretty simple stuff – now we just need these primitive objects to do stuff. Lets start with the WriteLine primitive. We place the text in inverted commas in the Text field. Because this field accepts any valid VB expression we could have put variables etc. in there if we wanted to. The next thing we want to do is allow the user to input a number. This brings up an interesting problem, if a user were to type in a number, there would need to be someway to declare a variable to hold that value for the life of the workflow. We can achieve this by declaring a variable. To declare a variable, move your cursor over the variables tab at the bottom of the workflow, and then type the name of the new variable in the “Create Variable” field and set it as shown in the image above. Now that we have a variable, we want to call the Console.Readline method and assign the inputted value from the Console to that variable. The code that cannot be seen is actually this – Convert.ToInt32(Console.ReadLine()) We now have a workflow that first prompts the user for a number, then allows the user to type in a number. We are almost done, we just need to make the system react to the value inputted. There are a few ways we could do this, I am going to use the Decision item. So select the Decision object on the designer and then view its properties (F4 for me), and in the condition field place a condition. For simplicity sake I have decided that if the user guesses 10, they will have guessed the number. This is now the completed workflow. Its really easy to understand and shows some really powerful principles for Business applications. You can run the application and see what it does. Imagine writing business solutions that do not worry about the exact flow of objects, but simply allows a business analyst or someone to configure the solution to work exactly as the business rules would dictate. And if the rules changed six months later all they would need to do is re-drag some of the flows. Now I do not know if WF4 will allow for this, but it feels like it is a step in the right direct.

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• Framework for Everything - Where to begin? [Longer post]

  - by SquaredSoft

  Back story of this question, feel free to skip down for the specific question Hello, I've been very interested in the idea of abstract programming the last few years. I've made about 30 attempts at creating a piece of software that is capable of almost anything you throw at it. I've undertook some attempts at this that have taken upwards of a year, while getting close, never releasing it beyond my compiler. This has been something I've always tried wrapping my head around, and something is always missing. With the title, I'm sure you're assuming, "Yes of course you noob! You can't account for everything!" To which I have to reply, "Why not?" To give you some background into what I'm talking about, this all started with doing maybe a shade of gray hat SEO software. I found myself constantly having to create similar, but slightly different sets of code. I've gone through as many iterations of way to communicate on http as the universe has particles. "How many times am I going to have to write this multi-threaded class?" is something I found myself asking a lot. Sure, I could create a class library, and just work with that, but I always felt I could optimize what I had, which often was a large undertaking and typically involved frequent use of the CRTL+A keyboard shortcut, mixed with the delete button. It dawned on me that it was time to invest in a plugin system. This would allow me to simply add snippets of code. as time went on, and I could subversion stuff out, and distribute small chunks of code, rather than something that encompasses only a specific function or design. This comes with its own complexity, of course, and by the time I had finished the software scope for this addition, it hit me that I would want to add to everything in the software, not just a new http method, or automation code for a specific website. Great, we're getting more abstract. However, the software that I have in my mind comes down to a quite a few questions regarding its execution. I have to have some parameters to what I am going to do. After writing what the perfect software would do in my mind, I came up with this as a list of requirements: Should be able to use networking A "Macro" or "Expression system" which would allow people to do something like : =First(=ParseToList(=GetUrl("http://www.google.com?q=helloworld!"), Template.Google)) Multithreaded Able to add UI elements through some type of XML -- People can make their own addons etc. Can use third party API through the plugins, such as Microsoft CRM, Exchange, etc. This would allow the software to essentially be used for everything. Really, any task you wish to automate, in a simple way. Making the UI was as also extremely hard. How do you do all of this? Its very difficult. So my question: With so many attempts at this, I'm out of ideas how to successfully complete this. I have a very specific idea in my mind, but I keep failing to execute it. I'm a self taught programmer. I've been doing it for years, and work professionally in it, but I've never encountered something that would be as complex and in-depth as a system which essentially does everything. Where would you start? What are the best practices for design? How can I avoid constantly having to go back and optimize my software. What can I do to generalize this and draw everything out to completion. These are things I struggle with. P.s., I'm using c# as my main language. I feel like in this example, I might be hitting the outer limit of the language, although, I don't know if that is the case, or if I'm just a bad programmer. Thanks for your time.

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• What Counts for a DBA: Skill

  - by drsql

  “Practice makes perfect:” right? Well, not exactly. The reality of it all is that this saying is an untrustworthy aphorism. I discovered this in my “younger” days when I was a passionate tennis player, practicing and playing 20+ hours a week. No matter what my passion level was, without some serious coaching (and perhaps a change in dietary habits), my skill level was never going to rise to a level where I could make any money at the sport that involved something other than selling tennis balls at a sporting goods store. My game may have improved with all that practice but I had too many bad practices to overcome. Practice by itself merely reinforces what we know and what we can figure out naturally. The truth is actually closer to the expression used by Vince Lombardi: “Perfect practice makes perfect.” So how do you get to become skilled as a DBA if practice alone isn’t sufficient? Hit the Internet and start searching for SQL training and you can find 100 different sites. There are also hundreds of blogs, magazines, books, conferences both onsite and virtual. But then how do you know who is good? Unfortunately often the worst guide can be to find out the experience level of the writer. Some of the best DBAs are frighteningly young, and some got their start back when databases were stored on stacks of paper with little holes in it. As a programmer, is it really so hard to understand normalization? Set based theory? Query optimization? Indexing and performance tuning? The biggest barrier often is previous knowledge, particularly programming skills cultivated before you get started with SQL. In the world of technology, it is pretty rare that a fresh programmer will gravitate to database programming. Database programming is very unsexy work, because without a UI all you have are a bunch of text strings that you could never impress anyone with. Newbies spend most of their time building UIs or apps with procedural code in C# or VB scoring obvious interesting wins. Making matters worse is that SQL programming requires mastery of a much different toolset than most any mainstream programming skill. Instead of controlling everything yourself, most of the really difficult work is done by the internals of the engine (written by other non-relational programmers…we just can’t get away from them.) So is there a golden road to achieving a high skill level? Sadly, with tennis, I am pretty sure I’ll never discover it. However, with programming it seems to boil down to practice in applying the appropriate techniques for whatever type of programming you are doing. Can a C# programmer build a great database? As long as they don’t treat SQL like C#, absolutely. Same goes for a DBA writing C# code. None of this stuff is rocket science, as long as you learn to understand that different types of programming require different skill sets and you as a programmer must recognize the difference between one of the procedural languages and SQL and treat them differently. Skill comes from practicing doing things the right way and making “right” a habit.

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• Stumbling Through: Visual Studio 2010 (Part III)

  The last post ended with us just getting started on stumbling into text template file customization, a task that required a Visual Studio extension (Tangible T4 Editor) to even have a chance at completing.  Despite the benefits of the Tangible T4 Editor, I still had a hard time putting together a solid text template that would be easy to explain.  This is mostly due to the way the files allow you to mix code (encapsulated in <# #>) with straight-up text to generate.  It is effective to be sure, but not very readable.  Nevertheless, I will try and explain what was accomplished in my custom tt file, though the details of which are not really the point of this article (my way of saying dont criticize my crappy code, and certainly dont use it in any somewhat real application.  You may become dumber just by looking at this code.  You have been warned really the footnote I should put at the end of all of my blog posts). To begin with, there were two basic requirements that I needed the code generator to satisfy:  Reading one to many entity framework files, and using the entities that were found to write one to many class files.  Thankfully, using the Entity Object Generator as a starting point gave us an example on how to do exactly that by using the MetadataLoader and EntityFrameworkTemplateFileManager you include references to these items and use them like so: // Instantiate an entity framework file reader and file writer MetadataLoader loader = new MetadataLoader(this); EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this); // Load the entity model metadata workspace MetadataWorkspace metadataWorkspace = null; bool allMetadataLoaded =loader.TryLoadAllMetadata("MFL.tt", out metadataWorkspace); EdmItemCollection ItemCollection = (EdmItemCollection)metadataWorkspace.GetItemCollection(DataSpace.CSpace); // Create an IO class to contain the 'get' methods for all entities in the model fileManager.StartNewFile("MFL.IO.gen.cs"); Next, we want to be able to loop through all of the entities found in the model, and then each property for each entity so we can generate classes and methods for each.  The code for that is blissfully simple: // Iterate through each entity in the model foreach (EntityType entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name)) {     // Iterate through each primitive property of the entity     foreach (EdmProperty edmProperty in entity.Properties.Where(p => p.TypeUsage.EdmType is PrimitiveType && p.DeclaringType == entity))     {         // TODO:  Create properties     }     // Iterate through each relationship of the entity     foreach (NavigationProperty navProperty in entity.NavigationProperties.Where(np => np.DeclaringType == entity))     {         // TODO:  Create associations     } } There really isnt anything more advanced than that going on in the text template the only thing I had to blunder through was realizing that if you want the generator to interpret a line of code (such as our iterations above), you need to enclose the code in <# and #> while if you want the generator to interpret the VALUE of code, such as putting the entity name into the class name, you need to enclose the code in <#= and #> like so: public partial class <#=entity.Name#> To make a long story short, I did a lot of repetition of the above to come up with a text template that generates a class for each entity based on its properties, and a set of IO methods for each entity based on its relationships.  The two work together to provide lazy-loading for hierarchical data (such getting Team.Players) so it should be pretty intuitive to use on a front-end.  This text template is available here you can tweak the inputFiles array to load one or many different edmx models and generate the basic xml IO and class files, though it will probably only work correctly in the simplest of cases, like our MFL model described in the previous post.  Additionally, there is no validation, logging or error handling which is something I want to handle later by stumbling through the enterprise library 5.0. The code that gets generated isnt anything special, though using the LINQ to XML feature was something very new and exciting for me I had only worked with XML in the past using the DOM or XML Reader objects along with XPath, and the LINQ to XML model is just so much more elegant and supposedly efficient (something to test later).  For example, the following code was generated to create a Player object for each Player node in the XML:         return from element in GetXmlData(_PlayerDataFile).Descendants("Player")             select new Player             {                 Id = int.Parse(element.Attribute("Id").Value)                 ,ParentName = element.Parent.Name.LocalName                 ,ParentId = long.Parse(element.Parent.Attribute("Id").Value)                 ,Name = element.Attribute("Name").Value                 ,PositionId = int.Parse(element.Attribute("PositionId").Value)             }; It is all done in one line of code, no looping needed.  Even though GetXmlData loads the entire xml file just like the old XML DOM approach would have, it is supposed to be much less resource intensive.  I will definitely put that to the test after we develop a user interface for getting at this data.  Speaking of the data where IS the data?  Weve put together a pretty model and a bunch of code around it, but we dont have any data to speak of.  We can certainly drop to our favorite XML editor and crank out some data, but if it doesnt totally match our model, it will not load correctly.  To help with this, Ive built in a method to generate xml at any given layer in the hierarchy.  So for us to get the closest possible thing to real data, wed need to invoke MFL.IO.GenerateTeamXML and save the results to file.  Doing so should get us something that looks like this: <Team Id="0" Name="0">   <Player Id="0" Name="0" PositionId="0">     <Statistic Id="0" PassYards="0" RushYards="0" Year="0" />   </Player> </Team> Sadly, it is missing the Positions node (havent thought of a way to generate lookup xml yet) and the data itself isnt quite realistic (well, as realistic as MFL data can be anyway).  Lets manually remedy that for now to give us a decent starter set of data.  Note that this is TWO xml files Lookups.xml and Teams.xml: <Lookups Id=0>   <Position Id="0" Name="Quarterback"/>   <Position Id="1" Name="Runningback"/> </Lookups> <Teams Id=0>   <Team Id="0" Name="Chicago">     <Player Id="0" Name="QB Bears" PositionId="0">       <Statistic Id="0" PassYards="4000" RushYards="120" Year="2008" />       <Statistic Id="1" PassYards="4200" RushYards="180" Year="2009" />     </Player>     <Player Id="1" Name="RB Bears" PositionId="1">       <Statistic Id="2" PassYards="0" RushYards="800" Year="2007" />       <Statistic Id="3" PassYards="0" RushYards="1200" Year="2008" />       <Statistic Id="4" PassYards="3" RushYards="1450" Year="2009" />     </Player>   </Team> </Teams> Ok, so we have some data, we have a way to read/write that data and we have a friendly way of representing that data.  Now, what remains is the part that I have been looking forward to the most: present the data to the user and give them the ability to add/update/delete, and doing so in a way that is very intuitive (easy) from a development standpoint.Did 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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• Stumbling Through: Visual Studio 2010 (Part III)

  The last post ended with us just getting started on stumbling into text template file customization, a task that required a Visual Studio extension (Tangible T4 Editor) to even have a chance at completing.  Despite the benefits of the Tangible T4 Editor, I still had a hard time putting together a solid text template that would be easy to explain.  This is mostly due to the way the files allow you to mix code (encapsulated in <# #>) with straight-up text to generate.  It is effective to be sure, but not very readable.  Nevertheless, I will try and explain what was accomplished in my custom tt file, though the details of which are not really the point of this article (my way of saying dont criticize my crappy code, and certainly dont use it in any somewhat real application.  You may become dumber just by looking at this code.  You have been warned really the footnote I should put at the end of all of my blog posts). To begin with, there were two basic requirements that I needed the code generator to satisfy:  Reading one to many entity framework files, and using the entities that were found to write one to many class files.  Thankfully, using the Entity Object Generator as a starting point gave us an example on how to do exactly that by using the MetadataLoader and EntityFrameworkTemplateFileManager you include references to these items and use them like so: // Instantiate an entity framework file reader and file writer MetadataLoader loader = new MetadataLoader(this); EntityFrameworkTemplateFileManager fileManager = EntityFrameworkTemplateFileManager.Create(this); // Load the entity model metadata workspace MetadataWorkspace metadataWorkspace = null; bool allMetadataLoaded =loader.TryLoadAllMetadata("MFL.tt", out metadataWorkspace); EdmItemCollection ItemCollection = (EdmItemCollection)metadataWorkspace.GetItemCollection(DataSpace.CSpace); // Create an IO class to contain the 'get' methods for all entities in the model fileManager.StartNewFile("MFL.IO.gen.cs"); Next, we want to be able to loop through all of the entities found in the model, and then each property for each entity so we can generate classes and methods for each.  The code for that is blissfully simple: // Iterate through each entity in the model foreach (EntityType entity in ItemCollection.GetItems<EntityType>().OrderBy(e => e.Name)) {     // Iterate through each primitive property of the entity     foreach (EdmProperty edmProperty in entity.Properties.Where(p => p.TypeUsage.EdmType is PrimitiveType && p.DeclaringType == entity))     {         // TODO:  Create properties     }     // Iterate through each relationship of the entity     foreach (NavigationProperty navProperty in entity.NavigationProperties.Where(np => np.DeclaringType == entity))     {         // TODO:  Create associations     } } There really isnt anything more advanced than that going on in the text template the only thing I had to blunder through was realizing that if you want the generator to interpret a line of code (such as our iterations above), you need to enclose the code in <# and #> while if you want the generator to interpret the VALUE of code, such as putting the entity name into the class name, you need to enclose the code in <#= and #> like so: public partial class <#=entity.Name#> To make a long story short, I did a lot of repetition of the above to come up with a text template that generates a class for each entity based on its properties, and a set of IO methods for each entity based on its relationships.  The two work together to provide lazy-loading for hierarchical data (such getting Team.Players) so it should be pretty intuitive to use on a front-end.  This text template is available here you can tweak the inputFiles array to load one or many different edmx models and generate the basic xml IO and class files, though it will probably only work correctly in the simplest of cases, like our MFL model described in the previous post.  Additionally, there is no validation, logging or error handling which is something I want to handle later by stumbling through the enterprise library 5.0. The code that gets generated isnt anything special, though using the LINQ to XML feature was something very new and exciting for me I had only worked with XML in the past using the DOM or XML Reader objects along with XPath, and the LINQ to XML model is just so much more elegant and supposedly efficient (something to test later).  For example, the following code was generated to create a Player object for each Player node in the XML:         return from element in GetXmlData(_PlayerDataFile).Descendants("Player")             select new Player             {                 Id = int.Parse(element.Attribute("Id").Value)                 ,ParentName = element.Parent.Name.LocalName                 ,ParentId = long.Parse(element.Parent.Attribute("Id").Value)                 ,Name = element.Attribute("Name").Value                 ,PositionId = int.Parse(element.Attribute("PositionId").Value)             }; It is all done in one line of code, no looping needed.  Even though GetXmlData loads the entire xml file just like the old XML DOM approach would have, it is supposed to be much less resource intensive.  I will definitely put that to the test after we develop a user interface for getting at this data.  Speaking of the data where IS the data?  Weve put together a pretty model and a bunch of code around it, but we dont have any data to speak of.  We can certainly drop to our favorite XML editor and crank out some data, but if it doesnt totally match our model, it will not load correctly.  To help with this, Ive built in a method to generate xml at any given layer in the hierarchy.  So for us to get the closest possible thing to real data, wed need to invoke MFL.IO.GenerateTeamXML and save the results to file.  Doing so should get us something that looks like this: <Team Id="0" Name="0">   <Player Id="0" Name="0" PositionId="0">     <Statistic Id="0" PassYards="0" RushYards="0" Year="0" />   </Player> </Team> Sadly, it is missing the Positions node (havent thought of a way to generate lookup xml yet) and the data itself isnt quite realistic (well, as realistic as MFL data can be anyway).  Lets manually remedy that for now to give us a decent starter set of data.  Note that this is TWO xml files Lookups.xml and Teams.xml: <Lookups Id=0>   <Position Id="0" Name="Quarterback"/>   <Position Id="1" Name="Runningback"/> </Lookups> <Teams Id=0>   <Team Id="0" Name="Chicago">     <Player Id="0" Name="QB Bears" PositionId="0">       <Statistic Id="0" PassYards="4000" RushYards="120" Year="2008" />       <Statistic Id="1" PassYards="4200" RushYards="180" Year="2009" />     </Player>     <Player Id="1" Name="RB Bears" PositionId="1">       <Statistic Id="2" PassYards="0" RushYards="800" Year="2007" />       <Statistic Id="3" PassYards="0" RushYards="1200" Year="2008" />       <Statistic Id="4" PassYards="3" RushYards="1450" Year="2009" />     </Player>   </Team> </Teams> Ok, so we have some data, we have a way to read/write that data and we have a friendly way of representing that data.  Now, what remains is the part that I have been looking forward to the most: present the data to the user and give them the ability to add/update/delete, and doing so in a way that is very intuitive (easy) from a development standpoint.Did 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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• Disabling the right-click sub menu using JQuery

  - by nikolaosk

  Recently I needed to disable the right-click contextual menu in an HTML page for a very simple HTML application I was creating for a friend.This is going to be a short post where I will demonstrate how to disable the right-click contextual menu.I will use the very popular JQuery Library. Please download the library (minified version) from http://jquery.com/downloadPlease find here all my posts regarding JQuery.In this hands-on example I will be using Expression Web 4.0.This application is not a free application. You can use any HTML editor you like.You can use Visual Studio 2012 Express edition. You can download it here. I am going to create a very simple HTML 5 page with some text and an image. The HTML markup for the page follows. <!DOCTYPE html><html lang="en">  <head>    <title>HTML 5, CSS3 and JQuery</title>        <meta http-equiv="Content-Type" content="text/html;charset=utf-8" >    <link rel="stylesheet" type="text/css" href="style.css">     <script type="text/javascript" src="jquery-1.8.2.min.js">        </script><script type="text/javascript"> (function ($) { $(document).bind('contextmenu', function () { return false;}); })(jQuery); </script>       </head>  <body>      <div id="header">      <h1>Learn cutting edge technologies</h1>      <h2>HTML 5, JQuery, CSS3</h2>    </div>      <figure>  <img src="html5.png" alt="HTML 5"></figure>        <div id="main">          <h2>HTML 5</h2>                        <article>          <p>            HTML5 is the latest version of HTML and XHTML. The HTML standard defines a single language that can be written in HTML and XML. It attempts to solve issues found in previous iterations of HTML and addresses the needs of Web Applications, an area previously not adequately covered by HTML.          </p>          </article>      </div>             </body>  </html> This is the JQuery code, I use (function ($) { $(document).bind('contextmenu', function () { return false;}); })(jQuery); I simply disable/cancel the contextmenu event.When I load the simple page on the browser and I right-click the context menu does not appear.Hope it helps!!!

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• Why is 0 false?

  - by Morwenn

  This question may sound dumb, but why does 0 evaluates to false and any other [integer] value to true is most of programming languages? String comparison Since the question seems a little bit too simple, I will explain myself a little bit more: first of all, it may seem evident to any programmer, but why wouldn't there be a programming language - there may actually be, but not any I used - where 0 evaluates to true and all the other [integer] values to false? That one remark may seem random, but I have a few examples where it may have been a good idea. First of all, let's take the example of strings three-way comparison, I will take C's strcmp as example: any programmer trying C as his first language may be tempted to write the following code: if (strcmp(str1, str2)) { // Do something... } Since strcmp returns 0 which evaluates to false when the strings are equal, what the beginning programmer tried to do fails miserably and he generally does not understand why at first. Had 0 evaluated to true instead, this function could have been used in its most simple expression - the one above - when comparing for equality, and the proper checks for -1 and 1 would have been done only when needed. We would have considered the return type as bool (in our minds I mean) most of the time. Moreover, let's introduce a new type, sign, that just takes values -1, 0 and 1. That can be pretty handy. Imagine there is a spaceship operator in C++ and we want it for std::string (well, there already is the compare function, but spaceship operator is more fun). The declaration would currently be the following one: sign operator<=>(const std::string& lhs, const std::string& rhs); Had 0 been evaluated to true, the spaceship operator wouldn't even exist, and we could have declared operator== that way: sign operator==(const std::string& lhs, const std::string& rhs); This operator== would have handled three-way comparison at once, and could still be used to perform the following check while still being able to check which string is lexicographically superior to the other when needed: if (str1 == str2) { // Do something... } Old errors handling We now have exceptions, so this part only applies to the old languages where no such thing exist (C for example). If we look at C's standard library (and POSIX one too), we can see for sure that maaaaany functions return 0 when successful and any integer otherwise. I have sadly seen some people do this kind of things: #define TRUE 0 // ... if (some_function() == TRUE) { // Here, TRUE would mean success... // Do something } If we think about how we think in programming, we often have the following reasoning pattern: Do something Did it work? Yes -> That's ok, one case to handle No -> Why? Many cases to handle If we think about it again, it would have made sense to put the only neutral value, 0, to yes (and that's how C's functions work), while all the other values can be there to solve the many cases of the no. However, in all the programming languages I know (except maybe some experimental esotheric languages), that yes evaluates to false in an if condition, while all the no cases evaluate to true. There are many situations when "it works" represents one case while "it does not work" represents many probable causes. If we think about it that way, having 0 evaluate to true and the rest to false would have made much more sense. Conclusion My conclusion is essentially my original question: why did we design languages where 0 is false and the other values are true, taking in account my few examples above and maybe some more I did not think of? Follow-up: It's nice to see there are many answers with many ideas and as many possible reasons for it to be like that. I love how passionate you seem to be about it. I originaly asked this question out of boredom, but since you seem so passionate, I decided to go a little further and ask about the rationale behind the Boolean choice for 0 and 1 on Math.SE :)

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• Missing Edit Option on Silverlight 4 DataForm

  - by rip

  I’m trying out the Silverlight 4 beta DataForm control. I don’t seem to be able to get the edit and paging options at the top of the control like I’ve seen in Silverlight 3 examples. Has something changed or am I doing something wrong? Here’s my code: <UserControl x:Class="SilverlightApplication7.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="400" xmlns:dataFormToolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.DataForm.Toolkit"> <Grid x:Name="LayoutRoot" Background="White"> <dataFormToolkit:DataForm HorizontalAlignment="Left" Margin="10" Name="myDataForm" VerticalAlignment="Top" /> </Grid> </UserControl> public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); this.Loaded += new RoutedEventHandler(MainPage_Loaded); } void MainPage_Loaded(object sender, RoutedEventArgs e) { Movie movie = new Movie(); myDataForm.CurrentItem = movie; } public enum Genres { Comedy, Fantasy, Drama, Thriller } public class Movie { public int MovieID { get; set; } public string Name { get; set; } public int Year { get; set; } public DateTime AddedOn { get; set; } public string Producer { get; set; } public Genres Genre { get; set; } } }

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• Why do I get "Invalid Column Name" errors in EF4?

  - by camainc

  I am trying to learn Entity Framework 4.0. Disclaimer 1: I am brand new to Entity Framework. I have successfully used LinqToSQL. Disclaimer 2: I am really a VB.Net programmer, so the problem could be in the C# code. Given this code snippet: public int Login(string UserName, string Password) { return _dbContext.Memberships .Where(membership => membership.UserName.ToLower() == UserName.ToLower() && membership.Password == Password) .SingleOrDefault().PrimaryKey; } Why do you suppose I get "Invalid column name" errors? {"Invalid column name 'UserName'.\r\nInvalid column name 'Password'.\r\nInvalid column name 'UserName'.\r\nInvalid column name 'Password'."} Those column names are spelled and cased correctly. I also checked the generated code for the entity in question, and those columns are properties in the entity. The intellisense and code completion also puts the column names into the expression just as they are here. I am stumped by this. Any help would be much appreciated. https://docs.google.com/leaf?id=0B-xLbzoqGvXvNjBmZmNjNDAtY2RhNC00NDA2LWIxNzMtYjhjNTYxMDIyZmZl&hl=en

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• RadGrid Custom Filter

  - by Aaron

  I'm trying to add a custom filter to my RadGrid. I have a column, vendNum, which I want to allow users to filter on multiple vendNums with a comma-separated list. Basically, I want the same functionality as an "in" statement in SQL (where vendNum in (X,Y,Z)). I followed the tutorial on this site and came up with the following code to place in my RadGrid1_ItemCommand event. protected void RadGrid1_ItemCommand(object source, GridCommandEventArgs e) { if (e.CommandName == RadGrid.FilterCommandName) { Pair filterPair = (Pair)e.CommandArgument; switch (filterPair.Second.ToString()) { case "vendNum": TextBox tbPattern = (e.Item as GridFilteringItem)["vendNum"].Controls[0] as TextBox; if (tbPattern.Text.Contains(",")) { string[] values = tbPattern.Text.Split(','); if (values.Length >= 2) { e.Canceled = true; StringBuilder newFilter = new StringBuilder(); for (int i = 0; i < values.Length; i++) { if (i == values.Length - 1) newFilter.Append("[vendNum] = " + values[i]); else newFilter.Append("[vendNum] = " + values[i] + " OR "); } if (RadGrid1.MasterTableView.FilterExpression == "") RadGrid1.MasterTableView.FilterExpression = newFilter.ToString(); else RadGrid1.MasterTableView.FilterExpression = "((" + RadGrid1.MasterTableView.FilterExpression + ") AND (" + newFilter.ToString() + "))"; RadGrid1.Rebind(); } } break; default: break; } } } Doing this, though, keeps giving me an error "Expression Expected" when I try to filter with a comma separated list. I'm still able to filter a single vendNum. My FilterExpression does come out as expected. The code is failing on the RadGrid1.Rebind() statement. Has anyone dealt with this before? Any help is greatly appreciated. Thanks, Aaron

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• Forbidden Patterns Check-In Policy in TFS 2010

  - by Jaxidian

  I've been trying to use the Forbidden Patterns part of the TFS 2010 Power Tools and I'm just not understanding something - I simply cannot get anything to change as I try to use this! I'm using the version that was released recently (I believe April 23, 2010), so it's not an old version. First off, yes, I know it's regex based, so let's clear that doubt... I have tried to block the following scenarios: 1) I have modified all of my T4 EF templates to generate files named EntityName.gen.cs. I then attempted to prevent TFS from wanting to check those files in. I used the regular expression \.gen\.cs\z and it didn't change a single thing! I even tried it without the \z and nadda! 2) I don't want app.config and web.config files to be checked-in by default because we have these things stored into app.config.base and web.config.base files that our build scripts use to generate our per-environment app.config and web.config files. As such, I tried the following regexes and again, nothing worked! web\.config\z, app\.config\z, web\.release\.config\z and web\.debug\.config\z. What is it that I am screwing up with this?

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• WPF binding to current class property

  - by AnD

  Hello, I have a problem that i cant solve :( I have a user control (xaml file and cs file) in xaml it's like: <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="Demo.CtrlContent" x:Name="UserControl" d:DesignWidth="598.333" d:DesignHeight="179.133" xmlns:Demo="clr-namespace:Demo" > <UserControl.Resources> <Storyboard x:Key="SBSmall"> <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="border" Storyboard.TargetProperty="(FrameworkElement.Width)"> <SplineDoubleKeyFrame KeyTime="00:00:01" Value="I WANT TO BIND VALUE HERE"/> </DoubleAnimationUsingKeyFrames> </Storyboard> </UserControl.Resources> <Border BorderBrush="#FFC2C0C1" CornerRadius="3,3,3,3" BorderThickness="1,1,1,1" RenderTransformOrigin="0.5,0.5" x:Name="border" Margin="1,3,1,3" HorizontalAlignment="Left" VerticalAlignment="Top" Width="300"> and .cs file: public partial class CtrlContent { private mindef W { get { return (mindef) Window.GetWindow(this); } } public double MedWidth { // I WANT BIND THIS VALUE GO TO STORYBOARD VALUE IN XAML ABOVE get { double actualW; if(W == null) actualW = SystemParameters.PrimaryScreenWidth; else actualW = W.WrapMain.ActualWidth; return actualW - border.Margin.Left - border.Margin.Right; } } public double SmlWidth { get { return MedWidth / 2; } } public CtrlContent () { this.InitializeComponent(); } public CtrlContent (Content content) { this.InitializeComponent(); Document = content; } } in my .cs file there's a property called MedWidth, and in XAML file there's a storyboard called: SBSmall I want to bind my storyboard value to my property in class ctrlcontent. *the idea is, the storyboard is an animation to resize the control to a certain width depends on its parent container (the width is dynamic) anybody? please :) thanks!

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• Entity Framework - Condition on one to many join (Lambda)

  - by nirpi

  Hi, I have 2 entities: Customer & Account, where a customer can have multiple accounts. On the account, I have a "PlatformTypeId" field, which I need to condition on (multiple values), among other criterions. I'm using Lambda expressions, to build the query. Here's a snippet: var customerQuery = (from c in context.CustomerSet.Include("Accounts") select c); if (criterions.UserTypes != null && criterions.UserTypes.Count() > 0) { List<short> searchCriterionsUserTypes = criterions.UserTypes.Select(i => (short)i).ToList(); customerQuery = customerQuery.Where(CommonDataObjects.LinqTools.BuildContainsExpression<Customer, short>(c => c.UserTypeId, searchCriterionsUserTypes)); } // Other criterions, including the problematic platforms condition (below) var customers = customerQuery.ToList(); I can't figure out how to build the accounts' platforms condition: if (criterions.Platforms != null && criterions.Platforms.Count() > 0) { List<short> searchCriterionsPlatforms = criterions.Platforms.Select(i => (short)i).ToList(); customerQuery = customerQuery.Where(c => c.Accounts.Where(LinqTools.BuildContainsExpression<Account, short>(a => a.PlatformTypeId, searchCriterionsPlatforms))); } (The BuildContainsExpression is a method we use to build the expression for the multi-select) I'm getting a compilation error: The type arguments for method 'System.Linq.Enumerable.Where(System.Collections.Generic.IEnumerable, System.Func)' cannot be inferred from the usage. Try specifying the type arguments explicitly. Any idea how to fix this? Thanks, Nir.

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• Manual (Dynamic) LINQ subquery using IN clause

  - by immortalali-msn-com

  Hi Everyone, I want to query the DB through LINQ writing manual SQL, my linq method is: var q = db.TableView.Where(sqlAfterWhere); returnValue = q.Count(); this method queries well if the value passed to variable "sqlAfterWhere" is: (this variable is String type) it.Name = 'xyz' but what if i want to use IN clause, using a sub query. (i need to use 'it' before every column name in the above query to work), i cant use 'it' before the sub query columns as its a separate query, so what should i do, if i dont use any thing, and use column names directly it gives error saying " could not be resolved" where is my column names with out 'it' at the begining. So the query not working is: (this is a string passed to the variable above): it.Name IN (SELECT Name FROM TableName WHERE Address LIKE '%SomeAddress%') the errors come out as: Name could not be resolved Address could not be resolved The exact error is: "'Name' could not be resolved in the current scope or context. Make sure that all referenced variables are in scope, that required schemas are loaded, and that namespaces are referenced correctly., near simple identifier, line 6, column 25." Same error for "Address as well if i use 'it.' before these columns it gives error as: "The element type 'Edm.Int32' and the CollectionType 'Transient.collection[Transient.rowtype(GroupID,Edm.Int32(Nullable=True,DefaultValue=))]' are not compatible. The IN expression only supports entity, primitive, and reference types. , near WHERE predicate, line 6, column 14." Thanks for the help

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• .NET "must-have" development tools

  - by nzpcmad

  James Avery wrote a classic article a while back entitled Ten Must-Have Tools Every Developer Should Download Now which is a companion to Visual Studio Add-Ins Every Developer Should Download Now and Scott Hanselman has an excellent list on his blog but if you were on a desert island and were only allowed three .NET development tools which ones would you pick? Update: Assuming you already have an IDE like Visual Studio ... Update (5) : Up to 08/01 : The current state of play: Reflector 13 Resharper 9 NUnit + TestDriven.Net 7 Refactor Pro 4 Process Explorer (other Sysinternals) 3 SnippetCompiler 3 CodeRush 3 MSDN Library 2 LinqPad 2 Cruisecontrol.net 2 VMWare 2 RhinoMocks 2 Fiddler 2 PowerShell 2 PowerCommands for VS 2008 1 Sandcastle 1 SQL Profiler 1 Redgate ANTS profiler 11 NCover 1 VisualSVN 1 Rubber Ducky 1 WinMerge 1 NAnt 1 ViEmu 1 AnkhSVN 1 dotTrace Profiler 1 BeyondCompare 1 DPack VS Plugin 1 WCF Trace Viewer (SDK) 1 xUnit.net 1 SourceGear DiffMerge 1 Ghostdoc 1 Expression Studio 1 XAML Pad 1 KaXaml 1 Blender for 3D modeling 1 Snoop a WPF tool 1 DiffMerge 1 DPack 1 NDepend 1 Kodos 1 WatiN 1 HTTPWatch Basic Edition 1 Paint.Net 1 Mole For VS 1 What I find particularly interesting about this is that "NUnit + TestDriven.Net " is right up there in third place which shows the growing emphasis on testing as an integral part of the development process rather than as an adjunct which is simply bolted on. And I'm somewhat perplexed that Codesmith didn't receive a single vote?

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• Most useful free .NET libraries?

  - by Binoj Antony

  I have used a lot of free .NET libraries, some from Microsoft itself! Which ones have you found the most useful? Dependency Injection/Inversion of Control Unity Framework - Microsoft StructureMap - Jeremy Miller Castle Windsor NInject Spring Framework Autofac Managed Extensibility Framework Logging Logging Application Block - Microsoft Log4Net - Apache Error Logging Modules and Handlers(ELMAH) NLog Compression SharpZipLib DotNetZip YUI Compressor (CSS and JS compression/minification) AjaxMinifier (in other downloads) (JS compression. Also includes MSBuild task) Ajax Ajax Control Toolkit - Microsoft AJAXNet Pro Data Mapper XmlDataMapper AutoMapper ORM NHibernate Castle ActiveRecord Subsonic XmlDataMapper Charting/Graphics Microsoft Chart Controls for ASP.NET 3.5 SP1 Microsoft Chart Controls for Winforms ZedGraph Charting NPlot - Charting for ASP.NET and WinForms PDF Creators/Generators PDFsharp iTextSharp Unit Testing/Mocking NUnit Rhino Mocks Moq TypeMock.Net xUnit.net mbUnit Machine.Specifications Automated Web Testing Selenium Watin URL Rewriting url rewriter UrlRewriting.Net Url Rewriter and Reverse Proxy - Managed Fusion Controls Krypton - Free winform controls Source Grid - A Grid control Devexpress - free controls Unclassified CSLA Framework - Business Objects Framework AForge.net - AI, computer vision, genetic algorithms, machine learning Enterprise Library 4.1 - Logging, Exception Management, Validation, Policy Injection File helpers library C5 Collections - Collections for .NET Quartz.NET - Enterprise Job Scheduler for .NET Platform MiscUtil - Utilities by Jon Skeet Lucene.net - Text indexing and searching Json.NET - Linq over JSON Flee - expression evaluator PostSharp - AOP IKVM - brings the extensive world of Java libraries to .NET. Title of the question taken from here. [EDIT] Please provide links to these free libraries as well. Once we have a huge list of this, it can be arranged in categories! Please do not mention .NET Applications/EXEs here.

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• Binding "Text-Property" of a derived textbox to another textbox doesn´t work

  - by Jehof

  Hello, i have a class 'MyTextBox' that derives from the default TextBox in Silverlight. This class currently contains no additional code. I set up a binding in xaml to bind the Text-Property of MyTextbox to another Textbox to reflect the input made in the Textbox. The effect is that MyTextBox doesn´t update and not display the text of the other Textbox. Additional i made an equal binding for a normal Textbox. And this works. Here´s the XAML for the bindings. <UserControl x:Class="Silverlight.Sample.Dummy" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:my="clr-namespace:Sample" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="400"> <StackPanel x:Name="LayoutRoot" Background="White"> <TextBox Height="23" x:Name="textBox2" Width="120" /> <TextBox Text="{Binding ElementName=textBox2, Path=Text, Mode=TwoWay}" Width="120" /> <my:NumberTextBox Width="120" Text="{Binding ElementName=textBox2, Path=Text, Mode=OneWay}" /> </StackPanel> Is there something special to set for binding, when i derive from a control. PS: I tried a binding to a dummy object with INotifyPropertyChanged and set it as DataContext for the existing Textboxes. This test works as expected and my derived textbox gets updated.

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• MVC2 client/server validation of DateTime/Date using DataAnnotations

  - by Thomas

  The following are true: One of my columns (BirthDate) is of type Date in SQL Server. This very same column (BirthDate) is of type DateTime when EF generates the model. I am using JQuery UI Datepicker on the client side to be able to select the BirthDate. I have the following validation logic in my buddy class: [Required(ErrorMessageResourceType = typeof(Project.Web.ValidationMessages), ErrorMessageResourceName = "Required")] [RegularExpression(@"\b(0?[1-9]|1[012])[/](0?[1-9]|[12][0-9]|3[01])[/](19|20)?[0-9]{2}\b", ErrorMessageResourceType = typeof(Project.Web.ValidationMessages), ErrorMessageResourceName = "Invalid")] public virtual DateTime? BirthDate { get; set; } There are two issues with this: This will not pass server side validation (if I enable client side validation it works just fine). I am assuming that this is because the regular expression doesn't take into account hours, minutes, seconds as the value in the text box has already been cast as a DateTime on the server by the time validation occurs. If data already exists in the database and is read into the model and displayed on the page the BirthDate field shows hours, minutes, seconds in my text box (which I don't want). I can always use ToShortDateString() but I am wondering if there is some cleaner approach that I might be missing. Thanks

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• C# PredicateBuilder Entities: The parameter 'f' was not bound in the specified LINQ to Entities quer

  - by Neothor

  I needed to build a dynamic filter and I wanted to keep using entities. Because of this reason I wanted to use the PredicateBuilder from albahari. I created the following code: var invoerDatums = PredicateBuilder.True<OnderzoeksVragen>(); var inner = PredicateBuilder.False<OnderzoeksVragen>(); foreach (var filter in set.RapportInvoerFilter.ToList()) { if(filter.IsDate) { var date = DateTime.Parse(filter.Waarde); invoerDatums = invoerDatums.Or(o => o.Van >= date && o.Tot <= date); } else { string temp = filter.Waarde; inner = inner.Or(o => o.OnderzoekType == temp); } } invoerDatums = invoerDatums.And(inner); var onderzoeksVragen = entities.OnderzoeksVragen .AsExpandable() .Where(invoerDatums) .ToList(); When I ran the code there was only 1 filter which wasn't a date filter. So only the inner predicate was filled. When the predicate was executed I got the following error. The parameter 'f' was not bound in the specified LINQ to Entities query expression. While searching for an answer I found the following page. But this is already implemented in the LINQKit. Does anyone else experienced this error and know how to solve it?

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• WPF Richtextbox XamlWriter behaviour

  - by Krishna

  I am trying to save some c# source code into the database. Basically I have a RichTextBox that users can type their code and save that to the database. When I copy and paste from the visual studio environment, I would like to preserve the formating etc. So I have chosen to save the FlowDocuments Xaml to the database and set this back to the RichTextBox.Document. My below two function serialise and deserialise the RTB's contents. private string GetXaml(FlowDocument document) { if (document == null) return String.Empty; else{ StringBuilder sb = new StringBuilder(); XmlWriter xw = XmlWriter.Create(sb); XamlDesignerSerializationManager sm = new XamlDesignerSerializationManager(xw); sm.XamlWriterMode = XamlWriterMode.Expression; XamlWriter.Save(document, sm ); return sb.ToString(); } } private FlowDocument GetFlowDocument(string xamlText) { var flowDocument = new FlowDocument(); if (xamlText != null) flowDocument = (FlowDocument)XamlReader.Parse(xamlText); // Set return value return flowDocument; } However when I try to serialise and deserialise the following code, I am noticing this incorrect(?) behaviour using System; public class TestCSScript : MarshalByRefObject { } Serialised XAML is using System; public class TestCSScript : MarshalByRefObject {}{ } Notice the the new set of "{}" What am I doing wrong here... Thanks in advance for the help!

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• C#: Delegate syntax?

  - by Rosarch

  I'm developing a game. I want to have game entities each have their own Damage() function. When called, they will calculate how much damage they want to do: public class CombatantGameModel : GameObjectModel { public int Health { get; set; } /// <summary> /// If the attack hits, how much damage does it do? /// </summary> /// <param name="randomSample">A random value from [0 .. 1]. Use to introduce randomness in the attack's damage.</param> /// <returns>The amount of damage the attack does</returns> public delegate int Damage(float randomSample); public CombatantGameModel(GameObjectController controller) : base(controller) {} } public class CombatantGameObject : GameObjectController { private new readonly CombatantGameModel model; public new virtual CombatantGameModel Model { get { return model; } } public CombatantGameObject() { model = new CombatantGameModel(this); } } However, when I try to call that method, I get a compiler error: /// <summary> /// Calculates the results of an attack, and directly updates the GameObjects involved. /// </summary> /// <param name="attacker">The aggressor GameObject</param> /// <param name="victim">The GameObject under assault</param> public void ComputeAttackUpdate(CombatantGameObject attacker, CombatantGameObject victim) { if (worldQuery.IsColliding(attacker, victim, false)) { victim.Model.Health -= attacker.Model.Damage((float) rand.NextDouble()); // error here Debug.WriteLine(String.Format("{0} hits {1} for {2} damage", attacker, victim, attackTraits.Damage)); } } The error is: 'Damage': cannot reference a type through an expression; try 'HWAlphaRelease.GameObject.CombatantGameModel.Damage' instead What am I doing wrong?

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