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BC30560: 'ScriptManager' is ambiguous in the namespace 'System.Web.UI'.

Hi!

I get an eror on my website that says like this:
-------------------------------------------------------------------
Kompilatorfelmeddelande: BC30560: 'ScriptManager' is ambiguous in the namespace 'System.Web.UI'.

Källfel:

Rad 12: <form id="form1" runat="server">
Rad 13: <div>
Rad 14: <asp:ScriptManager ID="ScriptManager1" runat="server">
Rad 15: </asp:ScriptManager>
Rad 16:

Källfil: D:\WebSiter\wwwArken\Default3.aspx Rad: 14
---------------------------------------------------------------------------------

I've tried to solve in the following ways:
I looked in web.config to see if I hade several system.web.extension assemblies versions, but I only have one assembly with version 3.5.0.0.
I looked to see if I had several system.web.extension versions installed on c:\windows\assemblies, but I only have 3.5.0.0 installed.

How can I solve this problem?

Thanks for help!

Peter

avnish_tanna

Check if below helps:
http://www.plexityhide.com/faqs_gen_GTPNET/11231.htm

HeoQue

are you enforcing the new assemblies, the hosting may be installing another version ,add the following to your web.config :


    <runtime>
      <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
        <dependentAssembly>
          <assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>
          <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>
          <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
        </dependentAssembly>
      </assemblyBinding>
    </runtime>

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ASKER CERTIFIED SOLUTION

Andrew Beers

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avnish_tanna

Also, check this: http://www.dev102.com/2008/03/21/ajax-scriptmanager-error-bc30560/

Andrew Beers

Edit:

If you do what I said you can get rid of the <runtime> block.

Peter Nordberg

ASKER

Thanks for help! It worked exactly as you suggested.

Peter

RLUNT

From many other forums, the solution that worked most often was as follows:

Conditions: Running a project in a lower framework. ie. VS2008 but compiling to framework 2.0 or 3.0 when 3.5 and/or 4.0 are installed on the workstation.

Remove all references to system.*

re-add

Worked more often that the fully qualified name, etc.

Took me 2 hours to get this far so I hope the next person can same some time.