Could not load type 'System.Web.UI.ScriptReferenceBase'

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.NET3.5

hello friends,

I am trying to use ajax control in my asp.net website which i develope in visual studio 2008.I complete all the designing but whenever i try to run it,this exception is occur...

Exception Message:Could not load type 'System.Web.UI.ScriptReferenceBase' from assembly 'System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.

Please help me to solve thi sproblem.

Thanks in advance....

Posted 13-Mar-11 21:01pm

joan300

Updated 14-Mar-11 0:32am

Sandeep Mewara

v2

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Albin Abel · Answer 1 · 2011-03-13T22:14:00

Solution 1

add a script manager <asp:Scriptmanager id="script1" runat="server" /> at the top of your page content.

Posted 13-Mar-11 22:14pm

Albin Abel

Updated 13-Mar-11 22:15pm

v2