In this tutorial I’ll show you how to install AJAX Control toolkit step by step:

You can download AJAX Toolkit .NET 4 “Apr 12 2010” released before 4 days, from http://ajaxcontroltoolkit.codeplex.com/releases/view/43475#DownloadId=116534, Once downloaded, extract AjaxControlToolkit.Binary.NET4  on your computer, then extract AjaxControlToolkitSampleSite.

after that you need to open Visual Studio 2010, So we will add the toolkit to the toolbox. To do that press right-click in an empty space on your toolbox, then choose Add Tab.

You can rename the new tab to be “Ajax Toolkit” for example :

Then when it is added, right-click under the tab and select Choose Items:

When the dialog box appears Choose .NET Framework Components tab then click Browse button and find  AjaxControlToolkit folder that you installed the  AJAX Control Toolkit. In that directory you will find a sub-directory called AjaxControlToolkitSampleSite, and under that folder you will find bin Folder, in this folder choose AjaxControlToolkit.DLL which 5.59 MB.

The result of these steps, Visual Studio will load all the controls from the DLL file and by default it will be checked in this list:

To submit your steps press OK button.

Ultimately,you can find the components in your Toolbox and you can use it.

Happy programming!