System.Web.Extensions compilation error

[rkbnair]

I removed my VS 2008 beta installation and reinstalled the final version that
was released in November.
However, my ajax-enabled application gives the following error message on
compilation.

"Could not load file or assembly 'System.Web.Extensions,
Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one
of its dependencies. The system cannot find the file specified."

Any idea on how to fix this please?

 

[Walter Wang [MSFT]]

Hi,

Looks like you're trying to use VS 2008 to target ASP.NET AJAX 1.0 instead
of upgrading to use the built-in AJAX assemblyes in .NET 3.5. In this case,
you will need to follow the steps in this blog to make it work:

#Your Websites, Our Passion! : Using VS 2008 to target ASP.NET AJAX 1.0
http://blogs.msdn.com/webdevtools/archive/2007/07/30/using-vs-2008-to-target
-asp-net-ajax-1-0.aspx


On the other hand, Scottgu has another detailed blog on how to upgrade your
existing project to use the the 3.5 version:

#ASP.NET AJAX in .NET 3.5 and VS 2008 - ScottGu's Blog
http://weblogs.asp.net/scottgu/archive/2007/07/30/asp-net-ajax-in-net-3-5-an
d-vs-2008.aspx


Hope this helps.


Regards,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

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[rkbnair]

Hi Mr. Wang,

I followed the steps to upgrade the ajax. I think I'm not using any Ajax
tool kit. So, I ignored that section.

The runtime section is giving an error in the 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>
</assemblyBinding>
</runtime>

The documentation is not good at all. Information is missing here and there.
How do I know that I also have Ajax 1.0 installed in my machine?

 

[rkbnair]

Mr. Wang,

Also, my application did not ask the confirmation to upgrade the project.
I don't use the Ajax except to populate the grid. I mean I use very minimal
features.

 

[rkbnair]

Mr. Wang,

Also, how can I know which version of Ajax I'm using?

 

[Walter Wang [MSFT]]

Hi,

First, please note that if you don't want to install separate ASP.NET AJAX
extension, you will need to use project type to target 3.5 framework to use
the built-in Ajax extension in Visual Studio 2008.

To find out if you have installed Ajax Extension 1.0, try to open a Visual
Studio 2008 command prompt and run following command:

gacutil /l | findstr /I system.web.extension

This should list the assemblies installed in GAC.

Since there's some changes from VS2008 beta version, a tip to find out
which config is needed in your web.config to enable AJAX extension is to
create a new web site (target 3.5 Framework) and check the generated
web.config, it has all the information you needed to enable AJAX.

Hope this helps.

Regards,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

==================================================
When responding to posts, please "Reply to Group" via your newsreader so
that others may learn and benefit from your issue.
==================================================

This posting is provided "AS IS" with no warranties, and confers no rights.