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

Posted on 2009-04-13
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Last Modified: 2013-12-17
I am trying to add an infragistics grid control to my application.  After I add the grid and ran the application, I got this error message.  I went and added the reference which then shows up correctly in my web.config file....but when I view the source code for the web page, the assembly was not added.  I tried to add it manually but that did not work.  Can someone tell me what I have done wrong or what the proper way to add this reference to my application?
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Question by:kwh3856
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6 Comments
 
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Expert Comment

by:Sreedhar Vengala
ID: 24132964
One case would be: try: Change:

<ajaxToolkit:ToolkitScriptManager ID="ScriptManager1" runat="server" />

to: <asp:ScriptManager ID="ScriptManager1" runat="server" />
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Author Comment

by:kwh3856
ID: 24133008
where is that change made?  In the Source or Web.config?
 
Thanks
Kenny
 
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Author Comment

by:kwh3856
ID: 24133047
Could this be where my problem is?  (In the web config)
 

<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules>
<remove name="ScriptModule"/>
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</modules>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated"/>
<remove name="ScriptHandlerFactory"/>
<remove name="ScriptHandlerFactoryAppServices"/>
<remove name="ScriptResource"/>
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</handlers>
</system.webServer>
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Accepted Solution

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Sreedhar Vengala earned 500 total points
ID: 24133082
Also can you make sure that .NET Framework 3.5 SP1 is installed on you machine.
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Author Comment

by:kwh3856
ID: 24134227
Thanks.  I will try that.
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Author Closing Comment

by:kwh3856
ID: 31569680
Thank you very much.
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