AjaxToolkit: Can't drag and drop a ajax toolkit control to a webform

I set a reference to AjaxControlToolkit.dll and this 开发者_如何学Pythonadded all of the toolkit's controls to my toolbar. I then tried to drag and drop one of the controls to my webform and nothing happened-no error message, no control added to the form. Double clicking the control also did nothing.

The web site compiles with no errors, I also tried to bounce VS2008. I am running Developers Edition on Windows Server 2008.

I was able to add a Script Manager control

This worked w/o issue on my other computers.

Also, make sure you drop the tools into the source tab of your ASP page. As many of these controls has no graphical representation.

Ajaxtoolkit controls in VS2008 are extenders of other controls. Add the parent control first.