Stone Coast Web Design's Weblog

I recently tried adding a page to WSS 3.0 which utilized one of the ASP.NET AJAX components and received the error "Error - this control is not registered as a safe control." After some digging, I found out that you have take a few steps to get these AJAX control extenders to work in Sharepoint.

• AjaxControlToolkit.dll - Put this in your /Bin directory
• Add an assembly reference in the web.config (note: for the future versions of the Control Tookit, the version number can change.  Right-click on the dll and go to properties to find the dll verison):

   <assemblies>
   ...
   <add assembly="AjaxControlToolkit, Version=1.0.10920.32880, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e"/>
   ....
   </assemblies>

• Add the tagprefix for the Control Toolkit in the web.config:

  <controls>
  ...
  <add namespace="AjaxControlToolkit" assembly="AjaxControlToolkit" tagPrefix="ajaxToolkit"/>
  ....
  </controls>

• Register the assembly as a safe control: