The Wiki continues to grow with updated Wiki Articles on State Management, Themes in ASP.NET, ASP.NET Open Source Projects, and more. Share your knowledge and earn Community Recognition points by contributing to the ASP.NET Wiki.

Stephen Walther demonstrates how you can validate form data in an ASP.NET MVC application. Learn how to use model state and validation HTML helpers. Learn how to take advantage of the IDataErrorInfo interface to customize your validation error messages.

Rollback or commit changes that you did on .NET objects.

I recently worked with one of my customer who when clicking on the "Design" view of an ASPX page, the designer window doesn't appear - blank page appears. And if you minimize the VS window, and maximize it again - we will see the desktop background in the place of the Designer surface. Verified that neither the "Microsoft Visual Studio Web Authoring Component" nor "Microsoft Web Designer tools" was installed on the machine (Control panel --> Add/Remove window...(read more)

The generic Dictionary collection class in .NET requires the key to be unique. But many applications/services require a flexible, generic Dictionary collection type that can accept multiple values for a key. This article explains one such generic Dictionary collection type.

Full-fledged ATL Windowless ActiveX Container. Ideal for hosting Windows Media Player, Transparent Flash and Silverlight Animations.

Using a proper MVC pattern to stream an image from Microsoft Chart controls for the Microsoft .NET Framework 3.5.

The objective behind writing this article is to make use of Ajax Control Toolkit in implementation.

A .NET Regular Expressions Find and Replace add-in for Visual Studio 2008

Build a GMail like web based chat using ASP.NET Ajax that can handle several request and simultaneos users

The requirement of the day is to extract the name of the columns returned by procedures. Stored Procedures are dynamic that is why we need to create a function that takes Stored Procedure name as parameter and return the column names in string. So here is the quick snippet for that 1: Public Shared Function getMetaData( ByVal spName As String ) As String () 2: Dim sqlCon As New SqlConnection(ConfigurationManager.ConnectionStrings( "lmString" ).ConnectionString) 3: sqlCon.Open() 4:  ...(read more)

It’s time to re-examine where things stand in our little niche.

This should be interesting, if enough people answer – so please answer (you need flash).

 

This is part 2 in the series where we create a feature that enables the download of multiple SharePoint list items as a zip. This post demonstrates how to stream a zip file containing sharepoint files and folders to the browser....(read more)

The task of familiarizing programmers with the sphere of developing parallel applications is getting more and more urgent. This article is a brief introduction into creation of multi-thread applications based on OpenMP technology. The approaches to debugging and optimization of parallel applications

How to create dynamic Silverlight controls with animation binding with XML data.

More professional ASP.NET c# search with proper document summary, query highlighting and RIA display options.

Introduction to network programming using visual basic

Chris Pels shows how to create two DropDownList controls where selecting an item in the first list populates the items in the second list.  Watch this and other videos on the Learn page.

ASP.NET MVC enables Web developers to build compelling standards-based Web solutions that are easy to maintain because it decreases the dependency between layers by using the Model-View-Controller (MVC) pattern and provides complete control over the page markup. It also improves testability which enables Test Driven Development (TDD). Click here to download ASP.NET MVC or to learn more about it.