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ASP.NET DropDownList render custom control with OptionGroup feature.

Vista-like TaskDialog control for .NET Framework 2.0, compatible with Windows XP

ASP.NET Password Strength Indicator somewhat similar to AJAX PasswordStrength extender control behavior and implemented by using jQuery and XML.

A tooltip to display separate title, contents, and image of each control, and enable for custom shaped.

Microsoft Excel has a very useful auto-filter function. With this function enabled on a column, the user is able to select filters from a drop-down list, which when selected, are applied to the column. This article describes how to add similar filter functionality to the WPF ListView control.

Page state, commonly referred to as view state, is persisted in a hidden form field, by default. When a page is being rendered, any programmatic changes to a control's state is saved to the page's overall view state. During the rendering stage, this view state is serialized into a base-64 encoded hidden form field and sent down to the client's browser. On postback, the view state data is sent back to the web server, where it is deserialized and returned to the appropriate Web controls in control hierarchy so that they may re-establish their state as it was prior to the postback.

View state provides a slick way to remember state in a stateless client-server model and it happens underneath the covers without any extra effort from page developers. The downside of view state, however, is that in certain situations the view state can grow to be exceedingly large. A large view state requires a longer page download time since it bloats the total web page size and also affects the postback time, since the entire view state content must be posted back to the web server along with the other form fields.

It is possible, however, to persist view state to an alternate medium. Such customizations were possible in ASP.NET 1.x by overriding a couple of methods in the Page class. ASP.NET 2.0 makes customizing page state persistence easier as this logic is handled through a separate class. In this article we'll explore the built-in page state persistence options in ASP.NET 2.0, which includes the ability to persist page state to session state rather than through a hidden form field.

Integrating WPF and XAML with the windows forms NotifyIcon control to produce a slick, styled popup window when the mouse is moved over the NotifyIcon

Zooming and panning an image in a Silverlight application.

Learn how to combine multiple cloud services into a single app, taking advantage of services offered by Windows Azure, Windows Azure AppFabric Access Control, Bing Maps and Facebook.

In this article, I'll describe how to extend the ImageBox control discussed in earlier articles to be able to display PDF files with the help of the GhostScript library and the conversion library described in the previous article.Getting StartedYou can download the source code used in this article f