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Visual Studio 2010 SVP 1 AJAX ClientScripManager is defined in System.Web.UI but ScriptManager isn'

Posted By:      Posted Date: May 22, 2011    Points: 0   Category :ASP.Net
 

I developed a web app in VS 2010 using master pages. I am converting it to Ajax. Did an extensive amount of ClientScriptManager.RegisterHiddenField need to convert to ScriptManager.RegisterHiddenField.  However, the Class SctipManager does not appear in the object browser under System.Web.UI.  Am I missing an assembly?  I go into MSDN System.Web.UI namespace and it appears in the documentaion under that namespace.  Googling for information I keep running accross GAC something to do with Ajax extension.  Looked in windows/assemblies and did not see GAC. What is GAC?

Cannot locate ScriptManager in System.Web.UI framework 4.0.

My Configuragion:

Running in any cpu mode on a 64bit machine. I believe VS 2010 is running in x86 mode.




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