Dear All experts,
Ajax Control Toolkit not working in at the time of Web Application Design what we need.
thank u for Your valuable replay.
after drag the control run the application i got this error message.
Error 4 Assembly 'AjaxControlToolkit, Version=4.1.40412.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e' uses 'System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'