new certifications - Page 86

Where do you find new linux applications & tools

- by solomongaby

Hello, I find myself finding new apps that really usefull and had no ideea existed. Where do you new, more under the radar linux application & tools. What blogs are you following ?

Copying SharePoint DB to a new SharePoint 2010 server

- by LJe

Hi - we would like to know what is the best and easy way to configure a new SharePoint 2010 Server, we have backup the existing DB of SharePoint 2007 (up and running). We would like to mirror the same settings and content of our current SharePoint setup to the new server using the SharePoint 2010.

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Adding new virtual disks to a Windows host in ESX “live”

- by warren

Building on my previous question about RHEL, how do you add get the guest OS to recognize that you've added new drives to it without a reboot? I have Windows 2003, XP, and 2008 guests running on ESX 4. I've added new virtual disks to the VM, but have not figured-out how to get the guest to recognize them without a reboot. Is this possible? If so, how?

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How to install PHP in a new directory in Windows

- by jasondavis

I am using Xampp for a local dev server, I am trying to upgrade it so I can use the latest version of PHP. I had it installed in my c drive c:\webserver\php I just installed everything new in a new drive D d:\webserver\php I then boot everything up and then I run phpinfo() and it is still showing my old version of PHP and even points to the old php installation C:\webserver\php\php.ini Am I missing something obvious here?

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excel 2007 enter new date

- by Lalajee

I’m try to create a excel template which will have three fields I like to update automatically when it’s open. Fields which this template will have Current Date: 02/07/2012 Sheet Number: 25 Between Date: 02/07/2012 to 02/08/2012 When I open this template after 03/08/2012 this sheet will have new data Current Date: 03/08/2012 Sheet Number: 26 Between Date: 03/08/2012 to 02/09/2012 For current date Private Sub Workbook_Open() ThisWorkbook.Worksheets("Sheet1").Range("A1").Value = Date End Sub Can this be done using excel function or do I need to use VB and also how do I update template automatically with new values to say next time use these dates.

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Migrating VMWare Fusion Bootcamp Partition to New Mac

- by 107217170653252726124

What is the best way for me to migrate my VMWare Fusion Bootcamp Partition to a new MAC. Preferably I would like to import the current bootcamp partition in as a strict virtual machine on the new mac, instead of in bootcamp. The "older mac" is about two years old, so I don't think there will be any compatibility issues, but i do not have enough disc space on the old machine to import it as a virtual machine, and then migrate it. Thanks for the help.

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XNA Level Select Menu

- by user29901

I'll try to explain this the best I can. I'm trying to create a level select menu for a game I'm making. The menu is basically a group of blocks numbered 1-16, similar to something like the Angry Birds menu. What I've done is created a cursor, basically just an outline to surround a block, that the user can move to select what level they want to play. What I want it do is move from block to block instead of simply moving around on the X and Y axes as it does now. So my question is, how can I get the cursor (highLight in the below code) to move from block to block(destinationRectangle1 etc. in the code)? /// Field for the "cursor" Vector2 highLightPos = new Vector2(400, 200); ///This is the Update code KeyboardState keyBoardState = Keyboard.GetState(); if (keyBoardState.IsKeyDown(Keys.Up)) highLightPos.Y--; if (keyBoardState.IsKeyDown(Keys.Down)) highLightPos.Y++; if (keyBoardState.IsKeyDown(Keys.Right)) highLightPos.X++; if (keyBoardState.IsKeyDown(Keys.Left)) highLightPos.X--; /// This is the draw code SpriteBatch spriteBatch = ScreenManager.SpriteBatch; Rectangle screenRectangle = new Rectangle(0, 0, 1280, 720); Rectangle destinationRectangle1 = new Rectangle(400, 200, 64, 64); Rectangle frameRectangle1 = new Rectangle(0, 0, 64, 64); Rectangle destinationRectangle2 = new Rectangle(500, 200, 64, 64); Rectangle frameRectangle2 = new Rectangle(64, 0, 64, 64); Rectangle destinationRectangle3 = new Rectangle(600, 200, 64, 64); Rectangle frameRectangle3 = new Rectangle(128, 0, 64, 64); Rectangle destinationRectangle4 = new Rectangle(700, 200, 64, 64); Rectangle frameRectangle4 = new Rectangle(192, 0, 64, 64); Rectangle destinationRectangle5 = new Rectangle(800, 200, 64, 64); Rectangle frameRectangle5 = new Rectangle(256, 0, 64, 64); Rectangle destinationRectangle6 = new Rectangle(400, 300, 64, 64); Rectangle frameRectangle6 = new Rectangle(320, 0, 64, 64); Rectangle destinationRectangle7 = new Rectangle(500, 300, 64, 64); Rectangle frameRectangle7 = new Rectangle(384, 0, 64, 64); Rectangle destinationRectangle8 = new Rectangle(600, 300, 64, 64); Rectangle frameRectangle8 = new Rectangle(448, 0, 64, 64); Rectangle destinationRectangle9 = new Rectangle(700, 300, 64, 64); Rectangle frameRectangle9 = new Rectangle(0, 64, 64, 64); Rectangle destinationRectangle10 = new Rectangle(800, 300, 64, 64); Rectangle frameRectangle10 = new Rectangle(64, 64, 64, 64); Rectangle destinationRectangle11 = new Rectangle(400, 400, 64, 64); Rectangle frameRectangle11 = new Rectangle(128, 64, 64, 64); Rectangle destinationRectangle12 = new Rectangle(500, 400, 64, 64); Rectangle frameRectangle12 = new Rectangle(192, 64, 64, 64); Rectangle destinationRectangle13 = new Rectangle(600, 400, 64, 64); Rectangle frameRectangle13 = new Rectangle(256, 64, 64, 64); Rectangle destinationRectangle14 = new Rectangle(700, 400, 64, 64); Rectangle frameRectangle14 = new Rectangle(320, 64, 64, 64); Rectangle destinationRectangle15 = new Rectangle(800, 400, 64, 64); Rectangle frameRectangle15 = new Rectangle(384, 64, 64, 64); Rectangle destinationRectangle16 = new Rectangle(600, 500, 64, 64); Rectangle frameRectangle16 = new Rectangle(448, 64, 64, 64); spriteBatch.Begin(); spriteBatch.Draw(forestBG, screenRectangle, Color.White); spriteBatch.Draw(highLight, highLightPos, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle1, frameRectangle1, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle2, frameRectangle2, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle3, frameRectangle3, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle4, frameRectangle4, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle5, frameRectangle5, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle6, frameRectangle6, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle7, frameRectangle7, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle8, frameRectangle8, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle9, frameRectangle9, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle10, frameRectangle10, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle11, frameRectangle11, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle12, frameRectangle12, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle13, frameRectangle13, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle14, frameRectangle14, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle15, frameRectangle15, Color.White); spriteBatch.Draw(levelSelectTiles, destinationRectangle16, frameRectangle16, Color.White); spriteBatch.End(); PS, I'm aware that this code is probably inefficient, cumbersome or that there's a better way to draw parts of a tile sheet. Any suggestions would be appreciated.

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iPhone code to create new NSUserDefaults objects?

- by Rob

I have NSUserDefaults storing a number of string variables for things like name, date of birth, address, etc. What I would like to know is how to write a code that will create a new object for each new user. For example, I have a spinning wheel that shows up immediately after the first time the user runs the app. What I want, is for that wheel to have one single option - "New User". Once that New User fills out a bunch of text fields that I am using NSUserDefaults to save, I want that user to be saved on that spinning wheel so that the next time they open up the app they have the option of returning to all of the variables that they previously put in, or creating a new user so they can input all new variables. I know how to do everything except write the code to create new users automatically. Potentially, the program should allow for a limitless number of these user objects and then just use something arbitrary like their last name to input into the spinning wheel. I would assume that the code would need to be put somewhere in the following code used to save the NSUserDefaults: NSUserDefaults *userData = [NSUserDefaults standardUserDefaults]; [userData setObject:txtName.text forKey:@"name"];

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New TabItem Content ActualHeight crashes Xaml Window

- by Jack Navarro

I am able to create new TabItems with Content dynamically to a new window by streaming the Xaml with XamlReader: NewWindow newWindow = new NewWindow(); newWindow.Show(); TabControl myTabCntrol = newWindow.FindName("GBtabControl") as TabControl; StringReader stringReader = new StringReader(XamlGrid); XmlReader xmlReader = XmlReader.Create(stringReader); TabItem myTabItem = new TabItem(); myTabItem.Header = qDealName; myTabItem.Content = (UIElement)XamlReader.Load(xmlReader); myTabCntrol.Items.Add(myTabItem); This works fine. It displays a new grid wrapped in a scrollviewer. The problem is access the TabItem content from the newWindow. TabItem ti = GBtabControl.SelectedItem as TabItem; string scrollvwnm = "scrollViewer" + ti.Header.ToString(); MessageBox.Show(ti.ActualHeight.ToString()); // returns 21.5 ScrollViewer scrlvwr = this.FindName(scrollvwnm) as ScrollViewer; MessageBox.Show(scrollvwnm); // Displays name double checked for accuracy MessageBox.Show(scrlvwr.ActualHeight.ToString()); //Crashes ScrollViewer scrlvwr = ti.FindName(scrollvwnm) as ScrollViewer; MessageBox.Show(scrollvwnm); // Displays name double checked for accuracy MessageBox.Show(scrlvwr.ActualHeight.ToString()); //Also Crashes Is there a method to refresh UI in XAML so the new window is able to access the newly loaded tab item content? Thanks

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Entity Framework - Insert/Update new entity with child-entities

- by Christina Mayers

I have found many questions here on SO and articles all over the internet but none really tackled my problem. My model looks like this (I striped all non essential Properties): Everyday or so "Play" gets updated (via a XML-file containing the information). internal Play ParsePlayInfo(XDocument doc) { Play play = (from p in doc.Descendants("Play") select new Play { Theatre = new Theatre() { //Properties }, //Properties LastUpdate = DateTime.Now }).SingleOrDefault(); var actors = (from a in doc.XPathSelectElement(".//Play//Actors").Nodes() select new Lecturer() { //Properties }); var parts = (from p in doc.XPathSelectElement(".//Play//Parts").Nodes() select new Part() { //Properties }).ToList(); foreach (var item in parts) { play.Parts.Add(item); } var reviews = (from r in doc.XPathSelectElement(".//Play//Reviews").Nodes() select new Review { //Properties }).ToList(); for (int i = 0; i < reviews.Count(); i++) { PlayReviews pR = new PlayReviews() { Review = reviews[i], Play = play, //Properties }; play.PlayReviews.Add(pR); } return play; } If I add this "play" via Add() every Childobject of Play will be inserted - regardless if some exist already. Since I need to update existing entries I have to do something about that. As far as I can tell I have the following options: add/update the child entities in my PlayRepositories Add-Method restructure and rewrite ParsePlayInfo() so that get all the child entities first, add or update them and then create a new Play. The only problem I have here is that I wanted ParsePlayInfo() to be persistence ignorant, I could work around this by creating multiple parse methods (eg ParseActors() ) and assign them to play in my controller (I'm using ASP.net MVC) after everything was parsed and added Currently I am implementing option 1 - but it feels wrong. I'd appreciate it if someone could guide me in the right direction on this one.

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Ruby - calling constructor without arguments & removal of new line characters

- by Raj

I am a newbie at Ruby, I have written down a sample program. I dont understand the following: Why constructor without any arguments are not called in Ruby? How do we access the class variable outside the class' definition? Why does it always append newline characters at the end of the string? How do we strip it? Code: class Employee attr_reader :empid attr_writer :empid attr_writer :name def name return @name.upcase end attr_accessor :salary @@employeeCount = 0 def initiaze() @@employeeCount += 1 puts ("Initialize called!") end def getCount return @@employeeCount end end anEmp = Employee.new print ("Enter new employee name: ") anEmp.name = gets() print ("Enter #{anEmp.name}'s employee ID: ") anEmp.empid = gets() print ("Enter salary for #{anEmp.name}: ") anEmp.salary = gets() theEmpName = anEmp.name.split.join("\n") theEmpID = anEmp.empid.split.join("\n") theEmpSalary = anEmp.salary.split.join("\n") anEmp = Employee.new() anEmp = Employee.new() theCount = anEmp.getCount puts ("New employee #{theEmpName} with employee ID #{theEmpID} has been enrolled, welcome to hell! You have been paid as low as $ #{theEmpSalary}") puts ("Total number of employees created = #{theCount}") Output: Enter new employee name: Lionel Messi Enter LIONEL MESSI 's employee ID: 10 Enter salary for LIONEL MESSI : 10000000 New employee LIONEL MESSI with employee ID 10 has been enrolled, welcome to hell! You have been paid as low as $ 10000000 Total number of employees created = 0 Thanks

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New projects not built when target platform is set explicitly

- by stiank81

I create a new solution with one project, and then change the target platform from "Any CPU" to "x86". After this new projects added doesn't get built by default, and their target platform doesn't follow the global settings. Why?! Looking at the configuration manager new projects added are not checked to "Build", and they get target platform "Any CPU" instead of the globally set x86. Why is this happening? I expect new projects too to get the globally set and defined x86 target platform.. Some things I've tried: Toggle global platform back to Any CPU, and then to x86 again. No change.. Choosing platform explicitly for the new project. x86 is not available in the list, and when I say <New..> and try adding it I'm not allowed as ".. a solution platform with the same name already exists.". On the build properties for the new project I can't change the platform in the Configuration section, but I can set "Platform target" to x86 in the General section. It is however not clear whether this actually makes a difference, and it wouldn't respond if I change the target platform globally later. Initially I thought this was a problem from converting my solution from VS2008 to VS2010, but the problem applies both places. I.e. when I create a solution in VS2008 and just stay in VS2008 I still get the problem.

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Java: How to make this main thread wait for the new thread to terminate

- by Jeff Bullard

I have a java class that creates a process, called child, using ProcessBuilder. The child process generates a lot of output that I am draining on a separate thread to keep the main thread from getting blocked. However, a little later on I need to wait for the output thread to complete/terminate before going on, and I'm not sure how to do that. I think that join() is the usual way to do this but I'm not sure how to do that in this case. Here is the relevant part of the java code. // Capture output from process called child on a separate thread final StringBuffer outtext = new StringBuffer(""); new Thread(new Runnable() { public void run() { InputStream in = null; in = child.getInputStream(); try { if (in != null) { BufferedReader reader = new BufferedReader(new InputStreamReader(in)); String line = reader.readLine(); while ((line != null)) { outtext.append(line).append("\n"); ServerFile.appendUserOpTextFile(userName, opname, outfile, line+"\n"); line = reader.readLine(); } } } catch (IOException iox) { throw new RuntimeException(iox); } } }).start(); // Write input to for the child process on this main thread // String intext = ServerFile.readUserOpTextFile(userName, opname, infile); OutputStream out = child.getOutputStream(); try { out.write(intext.getBytes()); out.close(); } catch (IOException iox) { throw new RuntimeException(iox); } // ***HERE IS WHERE I NEED TO WAIT FOR THE THREAD TO FINISH *** // Other code goes here that needs to wait for outtext to get all // of the output from the process // Then, finally, when all the remaining code is finished, I return // the contents of outtext return outtext.toString();

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Migrating MachineKey from iis6 on old server to iis7 on new server

- by MaseBase

I am migrating our hosting environment to a totally new data center with new boxes and hardware and software... the whole deal. Our website cookies are encrypted using the machineKey, so when I make a request to my domain and point it to the new web server (by overriding the local hosts file), I get an error because the cookie cannot be decrypted, since the Machine Key is different. I'd like to avoid any problems a frequent user might have when they arrive at the new server for the first time. To the best of my knowledge, at this point I think I need to set the same MachineKey from our current servers on our new servers. This way when past visitors with a cookie arrive at our website served by the new server, the cookie will be decrypted properly with the MachineKey it was encrypted with and then log them in properly. My question is where do I find my MachineKey value (in IIS 6 win2k3 server) so I can use that value to set it statically on my new servers? I've pulled up my machine.config file, but it doesn't specify the key, it only specifies a configSection where the key can be defined. It's not in my web.config for the app or elsewhere. I did find this great article on some MachineKey and Web Garden woes (which could explain some other bugs I've been experiencing with regard to the machineKey). Update I am back to this issue and am still faced with a similar problem. I have the MachineKey auto-generated on the IIS6 server but I need to get that exact key so I can set it explicitly and not have it auto-generated anymore. Any help is appreciated...

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dynamically insert new rows in the table (JavaScript) ?

- by Karandeep Singh

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How LINQ to Object statements work

- by rajbk

This post goes into detail as to now LINQ statements work when querying a collection of objects. This topic assumes you have an understanding of how generics, delegates, implicitly typed variables, lambda expressions, object/collection initializers, extension methods and the yield statement work. I would also recommend you read my previous two posts: Using Delegates in C# Part 1 Using Delegates in C# Part 2 We will start by writing some methods to filter a collection of data. Assume we have an Employee class like so: 1: public class Employee { 2: public int ID { get; set;} 3: public string FirstName { get; set;} 4: public string LastName {get; set;} 5: public string Country { get; set; } 6: } and a collection of employees like so: 1: var employees = new List<Employee> { 2: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 3: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 4: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 5: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" }, 6: }; Filtering We wish to find all employees that have an even ID. We could start off by writing a method that takes in a list of employees and returns a filtered list of employees with an even ID. 1: static List<Employee> GetEmployeesWithEvenID(List<Employee> employees) { 2: var filteredEmployees = new List<Employee>(); 3: foreach (Employee emp in employees) { 4: if (emp.ID % 2 == 0) { 5: filteredEmployees.Add(emp); 6: } 7: } 8: return filteredEmployees; 9: } The method can be rewritten to return an IEnumerable<Employee> using the yield return keyword. 1: static IEnumerable<Employee> GetEmployeesWithEvenID(IEnumerable<Employee> employees) { 2: foreach (Employee emp in employees) { 3: if (emp.ID % 2 == 0) { 4: yield return emp; 5: } 6: } 7: } We put these together in a console application. 1: using System; 2: using System.Collections.Generic; 3: //No System.Linq 4: 5: public class Program 6: { 7: [STAThread] 8: static void Main(string[] args) 9: { 10: var employees = new List<Employee> { 11: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 12: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 13: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 14: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" }, 15: }; 16: var filteredEmployees = GetEmployeesWithEvenID(employees); 17: 18: foreach (Employee emp in filteredEmployees) { 19: Console.WriteLine("ID {0} First_Name {1} Last_Name {2} Country {3}", 20: emp.ID, emp.FirstName, emp.LastName, emp.Country); 21: } 22: 23: Console.ReadLine(); 24: } 25: 26: static IEnumerable<Employee> GetEmployeesWithEvenID(IEnumerable<Employee> employees) { 27: foreach (Employee emp in employees) { 28: if (emp.ID % 2 == 0) { 29: yield return emp; 30: } 31: } 32: } 33: } 34: 35: public class Employee { 36: public int ID { get; set;} 37: public string FirstName { get; set;} 38: public string LastName {get; set;} 39: public string Country { get; set; } 40: } Output: ID 2 First_Name Jim Last_Name Ashlock Country UK ID 4 First_Name Jill Last_Name Anderson Country AUS Our filtering method is too specific. Let us change it so that it is capable of doing different types of filtering and lets give our method the name Where ;-) We will add another parameter to our Where method. This additional parameter will be a delegate with the following declaration. public delegate bool Filter(Employee emp); The idea is that the delegate parameter in our Where method will point to a method that contains the logic to do our filtering thereby freeing our Where method from any dependency. The method is shown below: 1: static IEnumerable<Employee> Where(IEnumerable<Employee> employees, Filter filter) { 2: foreach (Employee emp in employees) { 3: if (filter(emp)) { 4: yield return emp; 5: } 6: } 7: } Making the change to our app, we create a new instance of the Filter delegate on line 14 with a target set to the method EmployeeHasEvenId. Running the code will produce the same output. 1: public delegate bool Filter(Employee emp); 2: 3: public class Program 4: { 5: [STAThread] 6: static void Main(string[] args) 7: { 8: var employees = new List<Employee> { 9: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 10: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 11: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 12: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 13: }; 14: var filterDelegate = new Filter(EmployeeHasEvenId); 15: var filteredEmployees = Where(employees, filterDelegate); 16: 17: foreach (Employee emp in filteredEmployees) { 18: Console.WriteLine("ID {0} First_Name {1} Last_Name {2} Country {3}", 19: emp.ID, emp.FirstName, emp.LastName, emp.Country); 20: } 21: Console.ReadLine(); 22: } 23: 24: static bool EmployeeHasEvenId(Employee emp) { 25: return emp.ID % 2 == 0; 26: } 27: 28: static IEnumerable<Employee> Where(IEnumerable<Employee> employees, Filter filter) { 29: foreach (Employee emp in employees) { 30: if (filter(emp)) { 31: yield return emp; 32: } 33: } 34: } 35: } 36: 37: public class Employee { 38: public int ID { get; set;} 39: public string FirstName { get; set;} 40: public string LastName {get; set;} 41: public string Country { get; set; } 42: } Lets use lambda expressions to inline the contents of the EmployeeHasEvenId method in place of the method. The next code snippet shows this change (see line 15). For brevity, the Employee class declaration has been skipped. 1: public delegate bool Filter(Employee emp); 2: 3: public class Program 4: { 5: [STAThread] 6: static void Main(string[] args) 7: { 8: var employees = new List<Employee> { 9: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 10: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 11: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 12: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 13: }; 14: var filterDelegate = new Filter(EmployeeHasEvenId); 15: var filteredEmployees = Where(employees, emp => emp.ID % 2 == 0); 16: 17: foreach (Employee emp in filteredEmployees) { 18: Console.WriteLine("ID {0} First_Name {1} Last_Name {2} Country {3}", 19: emp.ID, emp.FirstName, emp.LastName, emp.Country); 20: } 21: Console.ReadLine(); 22: } 23: 24: static bool EmployeeHasEvenId(Employee emp) { 25: return emp.ID % 2 == 0; 26: } 27: 28: static IEnumerable<Employee> Where(IEnumerable<Employee> employees, Filter filter) { 29: foreach (Employee emp in employees) { 30: if (filter(emp)) { 31: yield return emp; 32: } 33: } 34: } 35: } 36: The output displays the same two employees. Our Where method is too restricted since it works with a collection of Employees only. Lets change it so that it works with any IEnumerable<T>. In addition, you may recall from my previous post, that .NET 3.5 comes with a lot of predefined delegates including public delegate TResult Func<T, TResult>(T arg); We will get rid of our Filter delegate and use the one above instead. We apply these two changes to our code. 1: public class Program 2: { 3: [STAThread] 4: static void Main(string[] args) 5: { 6: var employees = new List<Employee> { 7: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 8: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 9: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 10: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 11: }; 12: 13: var filteredEmployees = Where(employees, emp => emp.ID % 2 == 0); 14: 15: foreach (Employee emp in filteredEmployees) { 16: Console.WriteLine("ID {0} First_Name {1} Last_Name {2} Country {3}", 17: emp.ID, emp.FirstName, emp.LastName, emp.Country); 18: } 19: Console.ReadLine(); 20: } 21: 22: static IEnumerable<T> Where<T>(IEnumerable<T> source, Func<T, bool> filter) { 23: foreach (var x in source) { 24: if (filter(x)) { 25: yield return x; 26: } 27: } 28: } 29: } We have successfully implemented a way to filter any IEnumerable<T> based on a filter criteria. Projection Now lets enumerate on the items in the IEnumerable<Employee> we got from the Where method and copy them into a new IEnumerable<EmployeeFormatted>. The EmployeeFormatted class will only have a FullName and ID property. 1: public class EmployeeFormatted { 2: public int ID { get; set; } 3: public string FullName {get; set;} 4: } We could “project” our existing IEnumerable<Employee> into a new collection of IEnumerable<EmployeeFormatted> with the help of a new method. We will call this method Select ;-) 1: static IEnumerable<EmployeeFormatted> Select(IEnumerable<Employee> employees) { 2: foreach (var emp in employees) { 3: yield return new EmployeeFormatted { 4: ID = emp.ID, 5: FullName = emp.LastName + ", " + emp.FirstName 6: }; 7: } 8: } The changes are applied to our app. 1: public class Program 2: { 3: [STAThread] 4: static void Main(string[] args) 5: { 6: var employees = new List<Employee> { 7: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 8: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 9: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 10: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 11: }; 12: 13: var filteredEmployees = Where(employees, emp => emp.ID % 2 == 0); 14: var formattedEmployees = Select(filteredEmployees); 15: 16: foreach (EmployeeFormatted emp in formattedEmployees) { 17: Console.WriteLine("ID {0} Full_Name {1}", 18: emp.ID, emp.FullName); 19: } 20: Console.ReadLine(); 21: } 22: 23: static IEnumerable<T> Where<T>(IEnumerable<T> source, Func<T, bool> filter) { 24: foreach (var x in source) { 25: if (filter(x)) { 26: yield return x; 27: } 28: } 29: } 30: 31: static IEnumerable<EmployeeFormatted> Select(IEnumerable<Employee> employees) { 32: foreach (var emp in employees) { 33: yield return new EmployeeFormatted { 34: ID = emp.ID, 35: FullName = emp.LastName + ", " + emp.FirstName 36: }; 37: } 38: } 39: } 40: 41: public class Employee { 42: public int ID { get; set;} 43: public string FirstName { get; set;} 44: public string LastName {get; set;} 45: public string Country { get; set; } 46: } 47: 48: public class EmployeeFormatted { 49: public int ID { get; set; } 50: public string FullName {get; set;} 51: } Output: ID 2 Full_Name Ashlock, Jim ID 4 Full_Name Anderson, Jill We have successfully selected employees who have an even ID and then shaped our data with the help of the Select method so that the final result is an IEnumerable<EmployeeFormatted>. Lets make our Select method more generic so that the user is given the freedom to shape what the output would look like. We can do this, like before, with lambda expressions. Our Select method is changed to accept a delegate as shown below. TSource will be the type of data that comes in and TResult will be the type the user chooses (shape of data) as returned from the selector delegate. 1: 2: static IEnumerable<TResult> Select<TSource, TResult>(IEnumerable<TSource> source, Func<TSource, TResult> selector) { 3: foreach (var x in source) { 4: yield return selector(x); 5: } 6: } We see the new changes to our app. On line 15, we use lambda expression to specify the shape of the data. In this case the shape will be of type EmployeeFormatted. 1: 2: public class Program 3: { 4: [STAThread] 5: static void Main(string[] args) 6: { 7: var employees = new List<Employee> { 8: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 9: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 10: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 11: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 12: }; 13: 14: var filteredEmployees = Where(employees, emp => emp.ID % 2 == 0); 15: var formattedEmployees = Select(filteredEmployees, (emp) => 16: new EmployeeFormatted { 17: ID = emp.ID, 18: FullName = emp.LastName + ", " + emp.FirstName 19: }); 20: 21: foreach (EmployeeFormatted emp in formattedEmployees) { 22: Console.WriteLine("ID {0} Full_Name {1}", 23: emp.ID, emp.FullName); 24: } 25: Console.ReadLine(); 26: } 27: 28: static IEnumerable<T> Where<T>(IEnumerable<T> source, Func<T, bool> filter) { 29: foreach (var x in source) { 30: if (filter(x)) { 31: yield return x; 32: } 33: } 34: } 35: 36: static IEnumerable<TResult> Select<TSource, TResult>(IEnumerable<TSource> source, Func<TSource, TResult> selector) { 37: foreach (var x in source) { 38: yield return selector(x); 39: } 40: } 41: } The code outputs the same result as before. On line 14 we filter our data and on line 15 we project our data. What if we wanted to be more expressive and concise? We could combine both line 14 and 15 into one line as shown below. Assuming you had to perform several operations like this on our collection, you would end up with some very unreadable code! 1: var formattedEmployees = Select(Where(employees, emp => emp.ID % 2 == 0), (emp) => 2: new EmployeeFormatted { 3: ID = emp.ID, 4: FullName = emp.LastName + ", " + emp.FirstName 5: }); A cleaner way to write this would be to give the appearance that the Select and Where methods were part of the IEnumerable<T>. This is exactly what extension methods give us. Extension methods have to be defined in a static class. Let us make the Select and Where extension methods on IEnumerable<T> 1: public static class MyExtensionMethods { 2: static IEnumerable<T> Where<T>(this IEnumerable<T> source, Func<T, bool> filter) { 3: foreach (var x in source) { 4: if (filter(x)) { 5: yield return x; 6: } 7: } 8: } 9: 10: static IEnumerable<TResult> Select<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector) { 11: foreach (var x in source) { 12: yield return selector(x); 13: } 14: } 15: } The creation of the extension method makes the syntax much cleaner as shown below. We can write as many extension methods as we want and keep on chaining them using this technique. 1: var formattedEmployees = employees 2: .Where(emp => emp.ID % 2 == 0) 3: .Select (emp => new EmployeeFormatted { ID = emp.ID, FullName = emp.LastName + ", " + emp.FirstName }); Making these changes and running our code produces the same result. 1: using System; 2: using System.Collections.Generic; 3: 4: public class Program 5: { 6: [STAThread] 7: static void Main(string[] args) 8: { 9: var employees = new List<Employee> { 10: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 11: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 12: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 13: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 14: }; 15: 16: var formattedEmployees = employees 17: .Where(emp => emp.ID % 2 == 0) 18: .Select (emp => 19: new EmployeeFormatted { 20: ID = emp.ID, 21: FullName = emp.LastName + ", " + emp.FirstName 22: } 23: ); 24: 25: foreach (EmployeeFormatted emp in formattedEmployees) { 26: Console.WriteLine("ID {0} Full_Name {1}", 27: emp.ID, emp.FullName); 28: } 29: Console.ReadLine(); 30: } 31: } 32: 33: public static class MyExtensionMethods { 34: static IEnumerable<T> Where<T>(this IEnumerable<T> source, Func<T, bool> filter) { 35: foreach (var x in source) { 36: if (filter(x)) { 37: yield return x; 38: } 39: } 40: } 41: 42: static IEnumerable<TResult> Select<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector) { 43: foreach (var x in source) { 44: yield return selector(x); 45: } 46: } 47: } 48: 49: public class Employee { 50: public int ID { get; set;} 51: public string FirstName { get; set;} 52: public string LastName {get; set;} 53: public string Country { get; set; } 54: } 55: 56: public class EmployeeFormatted { 57: public int ID { get; set; } 58: public string FullName {get; set;} 59: } Let’s change our code to return a collection of anonymous types and get rid of the EmployeeFormatted type. We see that the code produces the same output. 1: using System; 2: using System.Collections.Generic; 3: 4: public class Program 5: { 6: [STAThread] 7: static void Main(string[] args) 8: { 9: var employees = new List<Employee> { 10: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 11: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 12: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 13: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 14: }; 15: 16: var formattedEmployees = employees 17: .Where(emp => emp.ID % 2 == 0) 18: .Select (emp => 19: new { 20: ID = emp.ID, 21: FullName = emp.LastName + ", " + emp.FirstName 22: } 23: ); 24: 25: foreach (var emp in formattedEmployees) { 26: Console.WriteLine("ID {0} Full_Name {1}", 27: emp.ID, emp.FullName); 28: } 29: Console.ReadLine(); 30: } 31: } 32: 33: public static class MyExtensionMethods { 34: public static IEnumerable<T> Where<T>(this IEnumerable<T> source, Func<T, bool> filter) { 35: foreach (var x in source) { 36: if (filter(x)) { 37: yield return x; 38: } 39: } 40: } 41: 42: public static IEnumerable<TResult> Select<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector) { 43: foreach (var x in source) { 44: yield return selector(x); 45: } 46: } 47: } 48: 49: public class Employee { 50: public int ID { get; set;} 51: public string FirstName { get; set;} 52: public string LastName {get; set;} 53: public string Country { get; set; } 54: } To be more expressive, C# allows us to write our extension method calls as a query expression. Line 16 can be rewritten a query expression like so: 1: var formattedEmployees = from emp in employees 2: where emp.ID % 2 == 0 3: select new { 4: ID = emp.ID, 5: FullName = emp.LastName + ", " + emp.FirstName 6: }; When the compiler encounters an expression like the above, it simply rewrites it as calls to our extension methods. So far we have been using our extension methods. The System.Linq namespace contains several extension methods for objects that implement the IEnumerable<T>. You can see a listing of these methods in the Enumerable class in the System.Linq namespace. Let’s get rid of our extension methods (which I purposefully wrote to be of the same signature as the ones in the Enumerable class) and use the ones provided in the Enumerable class. Our final code is shown below: 1: using System; 2: using System.Collections.Generic; 3: using System.Linq; //Added 4: 5: public class Program 6: { 7: [STAThread] 8: static void Main(string[] args) 9: { 10: var employees = new List<Employee> { 11: new Employee { ID = 1, FirstName = "John", LastName = "Wright", Country = "USA" }, 12: new Employee { ID = 2, FirstName = "Jim", LastName = "Ashlock", Country = "UK" }, 13: new Employee { ID = 3, FirstName = "Jane", LastName = "Jackson", Country = "CHE" }, 14: new Employee { ID = 4, FirstName = "Jill", LastName = "Anderson", Country = "AUS" } 15: }; 16: 17: var formattedEmployees = from emp in employees 18: where emp.ID % 2 == 0 19: select new { 20: ID = emp.ID, 21: FullName = emp.LastName + ", " + emp.FirstName 22: }; 23: 24: foreach (var emp in formattedEmployees) { 25: Console.WriteLine("ID {0} Full_Name {1}", 26: emp.ID, emp.FullName); 27: } 28: Console.ReadLine(); 29: } 30: } 31: 32: public class Employee { 33: public int ID { get; set;} 34: public string FirstName { get; set;} 35: public string LastName {get; set;} 36: public string Country { get; set; } 37: } 38: 39: public class EmployeeFormatted { 40: public int ID { get; set; } 41: public string FullName {get; set;} 42: } This post has shown you a basic overview of LINQ to Objects work by showning you how an expression is converted to a sequence of calls to extension methods when working directly with objects. It gets more interesting when working with LINQ to SQL where an expression tree is constructed – an in memory data representation of the expression. The C# compiler compiles these expressions into code that builds an expression tree at runtime. The provider can then traverse the expression tree and generate the appropriate SQL query. You can read more about expression trees in this MSDN article.

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Delete old map markers and load new ones?

- by pufAmuf

I'm trying to delete the old markers and load new ones. Here is the code I have that loads certain markers on page load - no issues here: (function() { var customIcons = { 1: { icon: 'redmarker.png', shadow: 'markershadow.png' }, 2: { icon: 'purplemarker.png', shadow: 'markershadow.png' }, 3: { icon: 'silvermarker.png', shadow: 'markershadow.png' }, 4: { icon: 'goldmarker.png', shadow: 'markershadow.png' } }; window.onload = function(){ var MY_MAPTYPE_ID = 'custom'; var stylez = [ { "stylers": [ { "hue": "#00ccff" }, { "saturation": -100 }, { "lightness": 5 } ] },{ } ]; var latlng = new google.maps.LatLng(10, 10); var options = { zoom: 16, center: latlng, panControl: false, zoomControl: false, scaleControl: true, mapTypeControlOptions: { mapTypeIds: [MY_MAPTYPE_ID,google.maps.MapTypeId.SATELLITE] }, mapTypeId: MY_MAPTYPE_ID }; var map = new google.maps.Map(document.getElementById('map'), options); var styledMapOptions = { name: 'Map' }; var jayzMapType = new google.maps.StyledMapType(stylez, styledMapOptions); map.mapTypes.set(MY_MAPTYPE_ID, jayzMapType); var infoWindow = new google.maps.InfoWindow; // Change this depending on the name of your PHP file downloadUrl("getxml.php", function(data) { var xml = data.responseXML; var markers = xml.documentElement.getElementsByTagName("marker"); for (var i = 0; i < markers.length; i++) { var name = markers[i].getAttribute("id"); var address = markers[i].getAttribute("id"); var type = markers[i].getAttribute("venue_type"); var point = new google.maps.LatLng( parseFloat(markers[i].getAttribute("lat")), parseFloat(markers[i].getAttribute("lng"))); var html = "<b>" + name + "</b> <br/>" + address; var icon = customIcons[type] || {}; var marker = new google.maps.Marker({ map: map, position: point, icon: icon.icon, shadow: icon.shadow }); bindInfoWindow(marker, map, infoWindow, html); } }); //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// jQuery(document).delegate(".topCanBeActive", "click", function( e ) { e.preventDefault(); jQuery(".topCanBeActive").removeClass("topActive"); jQuery(this).addClass("topActive"); switch( this.id ){ case 'all_activity_button': alert("search"); break; case 'events_button': downloadUrl("getxml2.php", function(data) { var xml = data.responseXML; var markers = xml.documentElement.getElementsByTagName("marker"); for (var i = 0; i < markers.length; i++) { var name = markers[i].getAttribute("id"); var address = markers[i].getAttribute("id"); var type = markers[i].getAttribute("venue_type"); var point = new google.maps.LatLng( parseFloat(markers[i].getAttribute("lat")), parseFloat(markers[i].getAttribute("lng"))); var html = "<b>" + name + "</b> <br/>" + address; var icon = customIcons[type] || {}; var marker = new google.maps.Marker({ map: map, position: point, icon: icon.icon, shadow: icon.shadow }); bindInfoWindow(marker, map, infoWindow, html); } }); break; case 'venues_button': alert("venues"); break; case 'search_button': alert("search"); break; } }); //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// } function bindInfoWindow(marker, map, infoWindow, html) { google.maps.event.addListener(marker, 'click', function() { infoWindow.setContent(html); infoWindow.open(map, marker); }); } function downloadUrl(url, callback) { var request = window.ActiveXObject ? new ActiveXObject('Microsoft.XMLHTTP') : new XMLHttpRequest; request.onreadystatechange = function() { if (request.readyState == 4) { request.onreadystatechange = doNothing; callback(request, request.status); } }; request.open('GET', url, true); request.send(null); } function doNothing() {} })(); Now, I created a button section where if you press one button, a different xml file is loaded. Notice the section with the ////////////////////// However, upon clicking the button, nothing happens. The xml file itself is okay and loads the desired data. I also receive no errors in firebug. Any ideas why this happens? Thanks!

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Creating a podcast feed for iTunes & BlackBerry users using WCF Syndication

- by brian_ritchie

In my previous post, I showed how to create a RSS feed using WCF Syndication. Next, I'll show how to add the additional tags needed to turn a RSS feed into an iTunes podcast. A podcast is merely a RSS feed with some special characteristics: iTunes RSS tags. These are additional tags beyond the standard RSS spec. Apple has a good page on the requirements. Audio file enclosure. This is a link to the audio file (such as mp3) hosted by your site. Apple doesn't host the audio, they just read the meta-data from the RSS feed into their system. The SyndicationFeed class supports both AttributeExtensions & ElementExtensions to add custom tags to the RSS feeds. A couple of points of interest in the code below: The imageUrl below provides the album cover for iTunes (170px × 170px) Each SyndicationItem corresponds to an audio episode in your podcast So, here's the code: .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: Consolas, "Courier New", Courier, Monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } 1: XNamespace itunesNS = "http://www.itunes.com/dtds/podcast-1.0.dtd"; 2: string prefix = "itunes"; 3: 4: var feed = new SyndicationFeed(title, description, new Uri(link)); 5: feed.Categories.Add(new SyndicationCategory(category)); 6: feed.AttributeExtensions.Add(new XmlQualifiedName(prefix, 7: "http://www.w3.org/2000/xmlns/"), itunesNS.NamespaceName); 8: feed.Copyright = new TextSyndicationContent(copyright); 9: feed.Language = "en-us"; 10: feed.Copyright = new TextSyndicationContent(DateTime.Now.Year + " " + ownerName); 11: feed.ImageUrl = new Uri(imageUrl); 12: feed.LastUpdatedTime = DateTime.Now; 13: feed.Authors.Add(new SyndicationPerson() {Name=ownerName, Email=ownerEmail }); 14: var extensions = feed.ElementExtensions; 15: extensions.Add(new XElement(itunesNS + "subtitle", subTitle).CreateReader()); 16: extensions.Add(new XElement(itunesNS + "image", 17: new XAttribute("href", imageUrl)).CreateReader()); 18: extensions.Add(new XElement(itunesNS + "author", ownerName).CreateReader()); 19: extensions.Add(new XElement(itunesNS + "summary", description).CreateReader()); 20: extensions.Add(new XElement(itunesNS + "category", 21: new XAttribute("text", category), 22: new XElement(itunesNS + "category", 23: new XAttribute("text", subCategory))).CreateReader()); 24: extensions.Add(new XElement(itunesNS + "explicit", "no").CreateReader()); 25: extensions.Add(new XDocument( 26: new XElement(itunesNS + "owner", 27: new XElement(itunesNS + "name", ownerName), 28: new XElement(itunesNS + "email", ownerEmail))).CreateReader()); 29: 30: var feedItems = new List<SyndicationItem>(); 31: foreach (var i in Items) 32: { 33: var item = new SyndicationItem(i.title, null, new Uri(link)); 34: item.Summary = new TextSyndicationContent(i.summary); 35: item.Id = i.id; 36: if (i.publishedDate != null) 37: item.PublishDate = (DateTimeOffset)i.publishedDate; 38: item.Links.Add(new SyndicationLink() { 39: Title = i.title, Uri = new Uri(link), 40: Length = i.size, MediaType = i.mediaType }); 41: var itemExt = item.ElementExtensions; 42: itemExt.Add(new XElement(itunesNS + "subtitle", i.subTitle).CreateReader()); 43: itemExt.Add(new XElement(itunesNS + "summary", i.summary).CreateReader()); 44: itemExt.Add(new XElement(itunesNS + "duration", 45: string.Format("{0}:{1:00}:{2:00}", 46: i.duration.Hours, i.duration.Minutes, i.duration.Seconds) 47: ).CreateReader()); 48: itemExt.Add(new XElement(itunesNS + "keywords", i.keywords).CreateReader()); 49: itemExt.Add(new XElement(itunesNS + "explicit", "no").CreateReader()); 50: itemExt.Add(new XElement("enclosure", new XAttribute("url", i.url), 51: new XAttribute("length", i.size), new XAttribute("type", i.mediaType))); 52: feedItems.Add(item); 53: } 54: 55: feed.Items = feedItems; If you're hosting your podcast feed within a MVC project, you can use the code from my previous post to stream it. Once you have created your feed, you can use the Feed Validator tool to make sure it is up to spec. Or you can use iTunes: Launch iTunes. In the Advanced menu, select Subscribe to Podcast. Enter your feed URL in the text box and click OK. After you've verified your feed is solid & good to go, you can submit it to iTunes. Launch iTunes. In the left navigation column, click on iTunes Store to open the store. Once the store loads, click on Podcasts along the top navigation bar to go to the Podcasts page. In the right column of the Podcasts page, click on the Submit a Podcast link. Follow the instructions on the Submit a Podcast page. Here are the full instructions. Once they have approved your podcast, it will be available within iTunes. RIM has also gotten into the podcasting business...which is great for BlackBerry users. They accept the same enhanced-RSS feed that iTunes uses, so just create an account with them & submit the feed's URL. It goes through a similar approval process to iTunes. BlackBerry users must be on BlackBerry 6 OS or download the Podcast App from App World. In my next post, I'll show how to build the podcast feed dynamically from the ID3 tags within the MP3 files.

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WPF Focus In Tab Control Content When New Tab is Created

- by Phil Sandler

I've done a lot of searching on SO and google around this problem, but can't seem to find anything else to try. I have a MainView (window) that contains a tab control. The tab control binds to an ObservableCollection of ChildViews (user controls). The MainView's ViewModel has a method that allows adding to the collection of ChildViews, which then creates a new tab. When a new tab is created, it becomes the active tab, and this works fine. This method on the MainView is called from another ViewModel (OtherViewModel). What I am trying to do is set the keyboard focus to the first control on the tab (an AutoCompleteBox from WPFToolkit*) when a new tab is created. I also need to set the focus the same way, but WITHOUT creating a new tab (so set the focus on the currently active tab). (*Note that there seem to be some focus problems with the AutoCompleteBox--even if it does have focus you need to send a MoveNext() to it to get the cursor in its window. I have worked around this already). So here's the problem. The focusing works when I don't create a new tab, but it doesn't work when I do create a new tab. Both functions use the same method to set focus, but the create logic first calls the method that creates a new tab and sets it to active. Code that sets the focus (in the ChildView's Codebehind): IInputElement element1 = Keyboard.Focus(autoCompleteBox); //plus code to deal with AutoCompleteBox as noted. In either case, the Keyboard.FocusedElement starts out as the MainView. After a create, calling Keyboard.Focus seems to do nothing (focused element is still the MainView). Calling this without creating a tab correctly sets the keyboard focus to autoCompleteBox. Any ideas? Update: Bender's suggestion half-worked. So now in both cases, the focused element is correctly the AutoCompleteBox. What I then do is MoveNext(), which sets the focus to a TextBox. I have been assuming that this Textbox is internal to the AutoCompleteBox, as the focus was correctly set on screen when this happened. Now I'm not so sure. This is still the behavior I see when this code gets hit when NOT doing a create. After a create, MoveNext() sets the focus to an element back in my MainView. The problem must still be along the lines of Bender's answer, where the state of the controls is not the same depending on whether a new tab was created or not. Any other thoughts?

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Error cloning gitosis-admin on new setup

- by michaelmior

I have the following in my gitosis.conf. (Created via gitsosis-init < id_rsa.pub with the key from my laptop) [gitosis] loglevel = DEBUG [group gitosis-admin] writable = gitosis-admin members = michael@laptop When I try git clone git@SERVER:gitsos-admin.git, I get the following errors: Initialized empty Git repository in /home/michael/gitsos-admin/.git/ DEBUG:gitosis.serve.main:Got command "git-upload-pack 'gitsos-admin.git'" DEBUG:gitosis.access.haveAccess:Access check for 'michael@laptop' as 'writable' on 'gitsos-admin.git'... DEBUG:gitosis.access.haveAccess:Stripping .git suffix from 'gitsos-admin.git', new value 'gitsos-admin' DEBUG:gitosis.group.getMembership:found 'michael@laptop' in 'gitosis-admin' DEBUG:gitosis.access.haveAccess:Access check for 'michael@laptop' as 'writeable' on 'gitsos-admin.git'... DEBUG:gitosis.access.haveAccess:Stripping .git suffix from 'gitsos-admin.git', new value 'gitsos-admin' DEBUG:gitosis.group.getMembership:found 'michael@laptop' in 'gitosis-admin' DEBUG:gitosis.access.haveAccess:Access check for 'michael@laptop' as 'readonly' on 'gitsos-admin.git'... DEBUG:gitosis.access.haveAccess:Stripping .git suffix from 'gitsos-admin.git', new value 'gitsos-admin' DEBUG:gitosis.group.getMembership:found 'michael@laptop' in 'gitosis-admin' ERROR:gitosis.serve.main:Repository read access denied fatal: The remote end hung up unexpectedly I know my key is being accepted because I have tried logging in via SSH and although a terminal won't be allocated, the authorization works.

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PowerPoint '10 avoid animation completion on click & advance slide or start new one

- by ScottS

Scenario I have PowerPoint 2010 On the "Transitions" tab the "Advance Slide On Mouse Click" check box is checked. I have a long, slow, timed, non-repeating animation working in the background of the slide. I click to advance the slide before the animation is finished, but ... Instead of advancing the slide, the animation moves to the completed state ... Forcing a second click to actually advance the slide. Additionally If I have other animations on the slide that are initiated by a click, the long animation also advances to a finished state before starting the new animation. Desired Behavior On click, I want the slide to advance or the next on-click animation to start whether the long animation is done or not, and without having that long animation first "complete" itself. In the case of another animation, I simply want the long animation to continue, while also doing the new animation. Ultimate Question Is there a way to either: Set an option somewhere to not have that animation complete on click and simply "continue" to animate with the start of a new animation or to advance the slide (as the case may be)? Create a VBA script that will produce the desired behavior for the long animation?

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Windows roaming profile when creating a new user profile

- by molecule

When a particular user is having a lot of problems with Windows XP e.g. applications crashing, unresponsive applications (which used to work), and as a general troubleshooting practice for a domain user, I normally rename that user's old profile and get him/her to logon to create a "fresh" profile (on the same PC). More often than not, this will solve the problem albeit some reconfiguration i.e. Outlook, Excel add-ins etc. As I took over the systems admin role from another administrator, I would like to know what is the easiest way to find out (either through a third party or some Windows administrative tool) what settings are carried over if the profile is a Roaming Profile. I tested creating a new user profile for one of my users and it seems basic Outlook settings such as the user's mailbox and PSTs are carried over automatically when I create a new user profile. I suspect this is done through a batch file loaded as part of the login script. However, my knowledge of scripting is limited and I don't want any corruptions to be carried over to the new profile. Can someone share their experiences on this? Thanks in advance.

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Spring 3 pet clinic example uses ${owner.new}, in the JSTL EL where can I read about out about .new

- by Albert

Spring 3 pet clinic example uses ${owner.new}, in the JSTL EL where can I find out more about where the .new comes from and what spec it is a part of? Ive seen empty and not empty operators/ reserved words but not .new until now in the Spring 3 pet clinic example.hers is the line im questioning: New Owner: located in the ownerForm.jsp file in the spring 3 pet clinic sample application.

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deploy LAMP config to new boxes with low/no effort

- by user1444233

I'm spending a lot of time setting up new Centos 6 instances. I use a VCS (Subversion) for most of the config files and all of the webapp source files (Github), but even with excellent package managers (like yum, npm, easy_install, etc.) it still takes time. I'd like to get to the point where I could try out a new potential web host by just signing up for an account, logging in and automatically sucking my standardised config onto the box. I know there are a set of tools that can help: Puppet Chef Vagrant and a set of services that sell solutions: [Jumpbox] http://www.jumpbox.com/ [BitNami Cloud] http://bitnami.org/cloud I don't mind investing time in learning a new tool, but as a no-budget start-up, I'm keen to keep monthly costs down. My biggest concern is that time spent on the server config is time away from the codebase, and that's where I think my team and I should be investing our energy, at least until we get funded and scale up a bit. I'd be grateful of some recommendations for which way to jump on config: stick with SSH and manual deploys, at least until you get big. bite the bullet and learn [say] puppet. You may only use it 8-10 times, but it pays to have such an easy tunable server bootstrap. don't bother, just pay the $100/month for a standard config service. It'll cost you $1000/year, but you should focus on the code. Other questions in this domain I use quite a complex stack (Drupal, Zend Server, MySQL, PHP, MongoDB, Python, django), but are there standard(ish) setups that include these or that I could build upon more quickly? Are the configs optimised for small, medium, large VPS (1GB, 4GB, 16GB)? How secure are they?

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Windows roaming profile when creating a new user profile

- by molecule

Hi all, When a particular user is having a lot of problems with Windows XP e.g. applications crashing, unresponsive applications (which used to work), and as a general troubleshooting practice for a domain user, I normally rename that user's old profile and get him/her to logon to create a "fresh" profile (on the same PC). More often than not, this will solve the problem albeit some reconfiguration i.e. Outlook, Excel add-ins etc. As I took over the systems admin role from another administrator, I would like to know what is the easiest way to find out (either through a third party or some Windows administrative tool) what settings are carried over if the profile is a Roaming Profile. I tested creating a new user profile for one of my users and it seems basic Outlook settings such as the user's mailbox and PSTs are carried over automatically when I create a new user profile. I suspect this is done through a batch file loaded as part of the login script. However, my knowledge of scripting is limited and I don't want any corruptions to be carried over to the new profile. Can someone share their experiences on this? Thanks in advance.

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