.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Problem adding rectangles dynamically

Posted By:      Posted Date: October 24, 2010    Points: 0   Category :WPF

This is my first time at WPF coding. I am trying to draw a chess board in 2D. Here's my code to add rectangle dynamically to a unifrom grid (mygrid)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Controls.Primitives;

namespace ChessBoard
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
        public MainWindow()

         public void hello()


View Complete Post

More Related Resource Links

dynamically adding sql server columns based on number of files in fileuploader


I want to create a new table to sql database at runtime.  The column names would be "Name", "Date", "Event".  I would also like to have one more column name "Image" but the problem is that since the amount of images will vary, I want the application to count the amount of files in the Multiple fileuploader and then add a image column to the table for the respected amount of files. 

For example if i am uploading 3 files in the multiple fileuploader, the names should be "Name", "Date", "Event", "Image1", "image2", Image3"

I also would like that table name to be name dynamically from the textbox Name when the user enters the information.


I have the following code to make a new table, but I dont know how to name the fields at runtime like previously asked please help!!!


Dim objConn As New SqlConnection("Server=<servername>;uid=<userid>;pwd=<password>;database=master")


Problem in accessing resource file dynamically.


Steps I have followed are
1.I have created myres.en-GB.resx file at C:.
2.then created locale specific myres.en-GB.resources using resgen at c: only,
resgen c:\myres.en-GB.resx
3.Linked the Resource File to Assembly using AL.exe which is giving me assembly at c: only.
Al /t:lib /embed:myres.en-GB.resources /out:ClassLibrary1.dll
4.I have created one web application using vs 2008 & then build it.
5.Then placed both resource file & dll in web applications Bin\en-GB folder.
6.Anf finally written code at page load like
 CultureInfo info = new CultureInfo("en-GB");
            Thread.CurrentThread.CurrentCulture = info;
            Assembly asd = Assembly.Load("ClassLibrary1");
            ResourceManager res = new ResourceManager("myres.en-GB", asd.GetSatelliteAssembly(info));
            string sdf = res.GetString("Lab1");

but after running application I m getting following error
MissingManifestResourceException", "Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Cla

Charset Problem with dynamically generated Word Document


in my asp.net web application i am dynamically generating a word documnet out of a sql data. I have set the char set UTF-8 during the doument creation in code but still when i open the generated document and check it char set .. it is always windows-1252 not the one that i have set. My sql data in the document have special characters whihc can only be understandable using the UTF-8 charset otherwise its always ?T written in place of an apostrophy . Pasting my code here..

         HttpContext.Current.Response.ContentType = "application/msword";
         HttpContext.Current.Response.ContentEncoding = System.Text.UnicodeEncoding.UTF8;
         HttpContext.Current.Response.Charset = "utf-8";
         string strFileName = "Details" + ".doc";
        HttpContext.Current.Response.AddHeader("Content-Disposition", "inline;filename=" + strFileName);
        StringBuilder strHTMLContent = new StringBuilder();
        string strMessage = " ";
        DataView abstractview = (DataView)dsAbstract.Select(DataSourceSelectArguments.Empty);
        foreach (DataRowView row1 in abstractview)
            strMessage += "<table border='1' cellspacing='0' cellpadding='5' width

Adding carriage returns between 2 dynamically created controls in an HtmlTableCell


The title pretty much explains it. Here is what i'm trying to do...

 Private Sub LoadGrid_CommentsField(ByVal Row As HtmlTableRow, ByVal BookingNumber As String, ByVal CommentsText As String)
  Dim Txt As TextBox
  Dim Cmd As ClickOnceButton.ClickOnceButton

  Txt = New TextBox
  Txt.ID = "txtComment_" & BookingNumber
  Txt.CssClass = "TFAppControls"
  Txt.TextMode = TextBoxMode.MultiLine
  Txt.MaxLength = 500
  Txt.Width = New Unit(95, UnitType.Percentage)
  Txt.Text = CommentsText

  Row.Cells(cComments).InnerHtml &= "<br/>"

  Cmd = New ClickOnceButton.ClickOnceButton
  Cmd.DisableAfterClick = True
  Cmd.Text = "Save Comments"
  Cmd.ID = "cmdSaveComments_" & BookingNumber
  Cmd.CssClass = "TFAppButtons"
  Cmd.EnableViewState = False
 End Sub

On the line where i try and update the InnerHtml, i get the following error; "Cannot get inner content of  because the contents are not literal."

Problem adding it to my project.


I tried to add Modal Popup to my project. I tried the Sample Site, it worked there, when I added it to my toolbar, and followed the tutorial, I couldn't use it. Then, I tried something simplier just to test, I added a Confirm Button, when I try to execute the page it goes back to Visual Studio and show me this:

Locating source for 'd:\hg\act\Server\AjaxControlToolkit\ExtenderBase\ExtenderControlBase.cs'. Checksum: MD5 {56 64 14 a8 4c 29 25 94 27 e0 35 10 f1 b4 60 f2}
The file 'd:\hg\act\Server\AjaxControlToolkit\ExtenderBase\ExtenderControlBase.cs' does not exist.
Looking in script documents for 'd:\hg\act\Server\AjaxControlToolkit\ExtenderBase\ExtenderControlBase.cs'...
Looking in the projects for 'd:\hg\act\Server\AjaxControlToolkit\ExtenderBase\ExtenderControlBase.cs'.
The file was not found in a project.
Looking in directory 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\crt\src\'...
Looking in directory 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\atlmfc\src\mfc\'...
Looking in directory 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\atlmfc\src\atl\'...
Looking in directory 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\atlmfc\include\'...
The debug source files settings for the active solution indicate that the deb

Problem adding .NET 3.5.1 feature on Server 2008 R2

Having an issue with a 2008 R2 64-bit Server becoming unresponsive/locking up when trying to activate the .NET 3.5.1 feature.  Did not have any previous version of .NET installed but ran the .NET Cleanup utility and completed successfully but still have same issue.  It installed .NET 4 via the Microsoft Updates OK but still hangs part way through the 3.5.1 install via the Server Manager/Add Features.  Any ideas?  Thanks!

Dynamically adding User Controls -- newbie question!

I am new to ASP.NET (coming from ColdFusion, thank goodness I'm away from that!).  And I am have THE hardest time understanding how to work with forms in ASP.NET.  Here's what I am doing:Dynamically add User Controls to a PlaceHolder based on some int value (which currently is passed in a HiddenField).Fire an event if the WebControls inside of the User Control change, then handle that event in the Main Page (i.e. save the input to DB)When the user clicks the "Next/Continue" button, the next controls for the next page are loaded.And I guess maybe I just can't seem to get how things work in ASP.NET, because I am really struggling with the general idea of how ASP.NET flows.  Should I be dynamically loading the controls in Page_Init, or Page_Load?  Or should I load the controls when the buttonclick event is fired?Do I have to add the axCtrl.OnDataChange += new EventHandler(HandleAxControlDataChange); line on Page_Load?  Or should I put this in When I first load the UserControl, I need to initialize some WebControls within the UserContorl.  Is there a way to know if I have loaded new user controls into my placeholder?  I can't use Page.IsPostback, because after the first page, every page is a postback from the buttonclick.Any help for this confused newbie would be GREATLY appreciated!!Here's what I have: pu

WPF: Adding checkbox with content Textblock at dynamically - width width returns NaN

I want to add set of checkbox at runtime one by one in one column. So i am creating check box object with content Textblock (Textwrapping = wrap) and adding to wrappanel but width of controls is NaN so i am not able to set location(Y co ordinate) of next checkbox. int lastheight = 10; private void btnadd_Click(object sender, RoutedEventArgs e) { CheckBox chk_add = new CheckBox(); chk_add.MaxWidth = 100; TextBlock tb_add = new TextBlock(); tb_add.MaxWidth = 100; tb_add.TextWrapping = TextWrapping.Wrap; tb_add.Text = "Here is long text so that text block will get split over two lines....... blah blah blah"; chk_add.Content=tb_add;     chk_add.Margin = new Thickness(10, lastheight, 0, 0); wrapPanel1.Children.Add(chk_add); lastheight += (int)chk_add.Width; } Can any any one have idea how can i tackle this issue.

Getting GridSplitters to function after dynamically adding WorkflowDesigner views

I am new to WPF and an writing a program which re-hosts an instance of the WF4 System.Activities.Presentation.WorkflowDesigner.   The program itself works fine, but I am unable to get either of two vertical GridSplitters within a nested Grid to work properly once the WorkflowDesigner's view is assigned into that grid at runtime.   (The GridSplitters work until the WorkflowDesigner and PropertyInspector are created and its views set as children of the nested grid). The window has an overall layout grid (OverallLayoutGrid) and nests the original layout grid (LayoutGrid) as the middle of the three row OverallLayoutGrid.   The outermost main OverallLayoutGrid as three rows and one column.   The Main Menu is in the first row, the nested LayoutGrid is in the middle, and a StackPanel with an error displaylistbox and status bar is in the last row. The nested LayoutGrid has 5 columns and one row layed out with: Col0 - Vacant in static XAML, System.Activities.Presentation.ToolboxControl added during Window load Col1 - "LeftGridSplitter" Col2 - Vacant in static XAML, System.Activities.Presentation.WorkflowDesigner.View added during "File | New" creation of new workflow COl3 - "RightGridSplitter" Col4 - Vacant in static XAML, System.Activities.Presentation.WorkflowDesigner.PropertyInspectorView added dur

how to adding dependencies to output cache dynamically?

Suppose i have an controller action that i would like to output cache. public class HomeController : Controller    {        [OutputCache(Duration=10, VaryByParam="none")]        public ActionResult Index()        {            // set  file dependency to the cache            return View();        }    } I need to dynamically set dependency to an external file  inside the code. How can i do that?      

AsyncPostback problem with Dynamically created Buttons

Hi guys, I'm creating a table which contains some string and a delete button. What I want to do is to remove the row with ajax postback whenever i click the related delete button. The very first asyncpostback works without any problem. After first asyncpostback i have to click two times to a delete button in order to delete one row. I have traced it with debug, when I click delete button for the first time, it does not enter the event method of the button. However at the second time it triggers the event of the button. Here is the code below.page cs file: protected void Page_Load(object sender , EventArgs e) { if (!isLoggedIn()) { Response.Redirect("default.apsx", true); } else { PopulateAddresses(AddressZone.Controls); } } protected void PopulateAddresses(ControlCollection controls) { base.user.GetUserAddresses(); Literal table = new Literal(); Literal tableEnd = new Literal(); table.Text = "<table cellpadding=\"0\" cellspacing=\"0\"><tr><td style=\"width:130px;line-height:inherit\"><b>Bölge</b></td><td style=\"width:90px;line-height:inherit\"><b>Adres basligi</b></td&

adding an external image dynamically

hi Folks, i got a report with an image, the full qualified image is stored in an attribute like http://vmt-moss/Immo/NA23/NA23.jpg if I set the the property in SQL 2008 R1 RS to external and the value to imagepath (where the http link is stored) nothing doesn't been displayed. Additonally i am setting an Action to the image property, where also the imagepath value has been set, if click onto the image, image has been opened properly. Do I have to format the value to a Url Format ?   thx for your help

Problem when adding Linked Server...

Hi @all,I try to add a new Linked Server to my DB in Microsoft SQL Server Management Studio Express...The following error is returned (SERVER2 is the Linked Server to add): There is no remote user 'sa' mapped to local user '(null)' from the remote server 'SERVER2'. (.Net SqlClient Data Provider)I entered the user sa and the correct password for SERVER2 but it doesen't work...When I connect to SERVER2 in Management Studio with the same infos it works fine...So please help...

Adding multiple usercontrols dynamically


Hi all,

I have a simple user control which contains a textbox and a dropdownlist. I need to add this control multiple times to my page then save the details to my db, validating each control. When they re-enter my page I need to load the user control for each record in the db populated with the data they entered. They can then edit the data, delete the row or add new rows.

I'm trying to find the cleanest most efficient way to accomplish this. I realise I would need to re-add the user controls after each postback re-populating the data. Would the best way be to add each row to an arraylist or list of type object, save it to the viewstate and re-add the controls with data on postback, or is there another method which would suit?

I've looked high and low but can't find anyone with a similar problem/solution. 

Any help is much appreciated,

Problem when adding items to a listbox from different threads


I have an application in which different threads add items to a listbox throughout the application's execution (not at startup). But when one of the threads tries to add an item to the listbox, a System.InvanlidOperationException is thrown and the error message is: "The calling thread cannot access this object because a different thread owns it." (In my scenario the "calling thread" is one of the worker threads that add items to the listbox, and the "different thread" is the UI thread.)

So basically I just need a simple way to allow the threads to share the listbox object, or, failing that, some other workaround.

Adding Controls dynamically in the infopath form - A standard Expense Entry scenario



I am having a requirement where I need to create an Expense Report Entry form using Infopath 2010. 

1) The form would have pre-defined columns/Controls like Exp.Type(drop-down) , Details , Location, Amount , Curruncy, Date etc..

2) User can enter/update as many line items as possible by clicking Add/Update/Delete for the each line items. So basically its like adding the same row dynamically.

3) When User Submits, I need to capture this data and post it to SAP where I am using SAP web Services.

Can you please suggest if this is possible in InfoPath form ?

If Yes, how can I achieve this dynamic line items functionality in InfoPath

And how can I read the data using the code so that I can Post it to the WebService? 

Problem adding a Service Reference


Hello all.

I am developing a Web Application using Visual Studio 2010 in witch I have to add a Service Reference to http://dev.virtualearth.net/webservices/v1/geocodeservice/geocodeservice.svc?wsdl.

The problem is that my company's network requires a proxy authentication. So when I enter the "Add Service Reference" dialog, paste the url and click "go" I get a "(407) Proxy Authentication Required" error and cannot add the service.

I also tried using svcutil but the result, obviously, was the same.

How can I work around this? Is there somewhere I can specify the required proxy? Googling around, I found some comments that it can be specified in the Web.config, but I can't find more details on how to do this.

Thanks in advance.

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend