Visual Studio :: 2010 All AJAX Extensions Error "is Not A Known Element"?
Jun 25, 2010
I have vs2005 Pro, vs2008 Pro and vs2010 Pro installed on a Vista machine. Recently I upgraded a non-AJAX web site from vs2008 to vs2010. The web site works fine but now I'd like to use the UpdatePanel. However after I insert the ScriptManager I receive
the following error:
"Element 'ScriptManager' is not a known element. This can occur if there is a compilation error in the Web site, or the web.config file is missing."
All the posts I have read seem that I should not see this error in vs2010. I have even added the following to the web.config with no success:
[Code]....
As a side note, I am able to use the latest AJAX Control Toolkit for .NET 4.
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