And it works?????? Can you post how did you made it?

I'm getting this javascript error:

dotnetnuke AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll

MS Ajax assy version (or dll) 4.1.51116.0

Adding the code below to page load event seems to work:

1) Telerik.Web.UI.RadScriptManager _s = (RadScriptManager)DotNetNuke.Framework.AJAX.GetScriptManager(this.Page);
_s.EnableScriptCombine = false;

2) Add a reference to telerik dll in dnn bin folder (Telerik.Web.UI.dll)

3) Add using statement:

using Telerik.Web.UI;

to code behind.

4) Add assy reference for msajax in .aspx file:

<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>

5) Make sure the support partial rendering is enabled

6) Put the ajax dll file in the DNN bin folder (ms ajax assy version :4.1.51116.0)

5) Compile and run

Telerik controls are great - but ms ajax controls are free!