.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

Custom ListBox Help Needed

Posted By:      Posted Date: September 17, 2010    Points: 0   Category :WPF
Hi,   We have a DataTemplate that includes a ListBox. Each ListBoxItem has some additional functionality provided by a 3rd party diagram component we are using. I need the functionality of the ListBox (selection, key-presses etc) but having this functionality seems to prevent the 3rd party stuff from working. The manufacturer of the 3rd party component suggested creating a custom ListBox with the code below.   public class CustomListBox : ListBox { protected override DependencyObject GetContainerForItemOverride() { return new CustomListBoxItem(); } } public class CustomListBoxItem : ListBoxItem { protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e) { base.OnMouseLeftButtonDown(e); e.Handled = false; } } This is great for making the 3rd party stuff work again but now we have lost the ListBox functionality (selection, key-presses). Setting e.Handled=true, obviously makes it work as the normal ListBox.   Any help is greatly appreciated.   Neil.      

View Complete Post

More Related Resource Links

Custom listbox filter

Hi, I'm trying to create a multiselect listbox filter control.  I was using Josh Heyes filters but I'm upgrading to 4.0 and this is no longer compatible.  I have created a new UserControl which inherits from QueryableFilterUserControl, but I can't work out what I need to put into the GetQueryable method.  It's very similar to the ForeignKey filter, it's just that I want the user to be able to select multiple items in the list. Can anyone help? Thanks, Emma

How to get values setted in custom items from a ListBox




I have a ListBox which looks like that :

Its DataTemplat is :


<DataTemplate x:Key="IndexDataTemplate">
   <StackPanel Margin="0,0,0,5">
    <TextBlock Height="Auto"

How do i display a custom message when my ListBox is empty?


I've got a ListBox. Its ItemsSource is Data-Bound to a Dataset.

When there are entries in the Dataset, the ListBox displays them, and it doesn't look so bad.

The ListBox is big, so when its empty it looks weird on the Window.

What i want to do is to display a custom mesasge somewhere inside the listbox(maybe in the center) if there is nothing to display. But i've had no luck sofar.

How could i go about achieving this?

Custom ListBox Hot Tracking


I have created a custom ListBox control which mimics something similar to the options window in MS Office 2007 with the hot-tracking functionality.

I have overridden the OnDrawItem method to do all my custom painting, however when I attempt to handle the DrawItemState.HotLight nothing happens. It appears that this state is invalid and that hot tracking is not used by a ListBox control.

Can anyone confirm or deny this? Does anyone know of a valid workaround?

Thanks in advance,


Custom Controls in C# .NET

Embedding user controls in a Windows form is just like adding a simple button or text box that are already provided with .NET. These basic controls were written essentially like you code your own controls. Typically the controls you design are to be used in multiple forms or to modularize your code. These reasons help reduce the amount of code you have to type as well as make it easier for you to change your implementation. There should almost never be any reason to duplicate code because it leaves a lot of room for bugs. So, implementing functionality specific to your control in the control's source code is a good idea. This reduces code duplication as well as modularize your code, which is a good programming guideline.

Writing custom MembershipProvider

ASP.NET Membership mechanism allows to use the build-in server tables to store and retrieve user data. By default, this mechanism can only be used with SQL Server database to which Microsoft provides suitable MembershipProvider class.
Inheriting from this abstract class, developer can use his own table(-es) from any database and use any database engine other than SQL Server, like Oracle, DB2 etc.

ListBox tricky to set in a DataGrid/GridView

Listboxes are very tricky to set selected items in grid - there is no real nice way to do it. It would have been great if Microsoft included a property that accepts an array or comma separated values - or anything! But they only allow each item in the list to be selected individually. The way to do this in a grid is a bit messy, but it is fairly simple to implement. When a row is created (as per the event), select the items of the listbox as per the datagrid source data:

Custom Editing Behavior for DataGridView TextBox Columns

For various reasons I'm using a DataGridView instead of a ListView, and while configuring the DataGridView to look like a ListView wasn't much of a problem, there's one thing that got on my nerves, which is the behavior of textbox cells in edit mode: It is much too easy to leave the edit mode accidentally, simply by pressing the cursor keys at the wrong time. For example when the text caret is positioned behind the last character of the textbox cell content, and you press the right arrow key

Working with DropDownList and ListBox Controls in ASP.NET

"In my application i am using dropdownlist to display all categories from a table. When the user clicks this control I display all records in that category. Category table also contains column called color.

I wanted display some categories in dropdown list different color and others in different color using ASP.NET."-Anonymous

Write Custom WebParts for SharePoint 2007

The popularity of SharePoint Portal Server 2003 led Microsoft to tightly integrate the next SharePoint version, Microsoft Office SharePoint Server (MOSS) 2007, with its ASP.NET 2.0 WebPart framework. This tight integration enables the ASP.NET and SharePoint developer to do a number of things that previously weren't possible

Writing Custom Web Parts for SharePoint 2007

As I mentioned in an earlier blog post, SharePoint 2007 is built on top of ASP.NET 2.0, which means you can now use ASP.NET 2.0 features (Forms Authentication, Master Pages, Membership, Site Navigation, New Data Controls, etc) when building SharePoint sites. This is true for both the new Windows SharePoint Services 3.0 version (which will be a free download) as well as Microsoft Office SharePoint Server 2007 (which costs money).

Response.BinaryWrite help needed


Hi all

Im new to .NET and stuck now, so i hope anyone can help my with my problem.

I have a MS SQL database where i have stored some documents as Binary data. I cant figure out how to retrieve them and show/download them in my browser.

I found some guides online and have try to put something together.


private void Write()
 int id = 0;
 string strID = Request.QueryString["id"];
 int.TryParse(strID, out id);

 var db = new ModelDataContext();
 var doc = db.DocumentDatas.Where(x => x.ID == id).FirstOrDefault();

 byte[] byteArray = File.ReadAllBytes(doc);


How do i fill the byteArray with the data?

Thanks in advance :)


Custom views on .aspx webpage


Hi again, i have a client that needs me to create a custom view on thier webpage similar to Microsoft Word.

It goes about that, when I click on an image it redirects me to another page and must create a custom view for a certain paragraph on that page. I am not sure how to do this and wonder if anyone knows how.

I am using C# programming language if that helps at all. I Heard that using javascript would work but i dont know javascript yet so is there any alternative?

Set Custom Paper size in C#.net 3.5


Dear All,

I have to set custom paper size 6X8 inches

plz tell sugest me code how to do it.

in C#.net 3.5

i m using Asp.net 3.5 Crystal report

i have to do it programiticlly



How to implement custom HttpContext for each request under class that implements IHTTPHandler


Hello All,

I created an application and implemented IHTTPHandler for all incoming request ending with ".aspx" extension.

Under "ProcessRequest" module, I am creating an instance of HttpContext (with URL attributes different from my application's URL i.e. if I am working on localhost then speciying Yahoo.com as its URL) and assigning it to "context" which comes as method argument.

After redirection, an error is generated. Also, the custom HTTPContext is not passed to the requested page (default.aspx, in my case.)

Code is as follows.

    Public Sub ProcessRequest(ByVal context As System.Web.HttpContext) Implements System.Web.IHttpHandler.ProcessRequest
            Dim requestedUrl As String
            Dim targetUrl As String
            Dim urlLength As Integer
            'Save settings which will be used while redirecting to appropriate page
            requestedUrl = context.Request.RawUrl
            If requestedUrl.IndexOf("?") >= 0 Then
                targetUrl = requestedUrl.Substring(0, requestedUrl.IndexOf("?"))
                targetUrl = requestedUrl
            End If
            If targetUrl = Nothing Or targetUrl.Length = 0 Then
                targetUrl = requestedUrl
            End If

How to read the custom http header



I have just joined the forum. I have a very simple query. I have added custom header to my website. Now I want to read the custom header. I am using IIS 6.0 on windows XP. I have already tried using using the Request.ServerVariables and and Request.header method. But none of them give me the custom header added to website.

Can any body help?

Thanks a lot in advance



Custom Control Design-Time SiteMap Provider Error


Greetings - I was referred here by MSDN forums hope this is the right place -  

I have a custom control (:WebControl) that renders web.sitemap in a specific way. While it runs error free and produces the expected result, at Design-Time it complains

Error Creating Control - MyControl  The provider 'AspNetXmlSiteMapProvider' specified for the defaultProvider does not exist in the providers collection.

I have discovered that the error is cause by this line of code:

string div = string.Format("<div class='{0}' id='{1}'>{2}</div>", this.CssClass, this.ID.ToString(), EnumerateNodesRecursive(SiteMap.RootNode, level));

or more specifically, by the reference to SiteMap.RootNode - I am not clear what is missing thoough because I have configured the SiteMapProvider in web.config as this:

        <add name="AspNetXmlSiteMapProvider" 
             type="System.Web.XmlSiteMapProvider, System.Web, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" 
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