Is any version of AjaxControlToolkit supported for SharePoint 2013? I tried to use framework version 4 and 4.5 with SharePoint 2013 but couldn't make it working.
Comments: I have the same issue and got the same error as described above. Any update on which version of Ajax control toolkit to use with SharePoint 2013?
Comments: I have the same issue and got the same error as described above. Any update on which version of Ajax control toolkit to use with SharePoint 2013?