Ajax Control Toolkit

The Ajax Control Toolkit contains a rich set of controls that you can use to build highly responsive and interactive Ajax-enabled Web applications. The Ajax Control Toolkit contains more than 40 controls, including the AutoComplete, CollapsiblePanel, ColorPicker, MaskedEdit, Calendar, Accordion, and Watermark controls. Using the Ajax Control Toolkit, you can build Ajax-enabled ASP.NET Web Forms applications by dragging-and-dropping Toolkit controls from the Visual Studio Toolbox onto a Web Forms page.

To view an interactive Web site that demonstrates each of the Ajax Control Toolkit controls, visit the Ajax Control Toolkit Sample Site.

The official website for the Ajax Control Toolkit -- which contains reference documentation, tutorials, and answers to frequently asked questions -- is located at http://www.asp.net/ajaxlibrary/act.ashx.

Install via NuGet

The easiest way to install the Ajax Control Toolkit into a Visual Studio 2010 project is via NuGet. You can see the package on the NuGet gallery at http://nuget.org/List/Packages/AjaxControlToolkit.