How to make controls from ajax control toolkit work in project upgraded from VS2008 to VS2010

Question

I had a working project in VS2008 / .Net 3.5 using controls from the ajax control toolkit (which targets .Net 3.5).

I upgraded the project in VS2010 Beta 2. I chose to target .Net 4.0 so I could take advantage of routing for WebForms (which is working).

When a page with a ModalPopupExtender loads, however, I get errors, "Syntax error" referencing a URI like:
{localhost}/WebResource.axd?d=-sR5kj2yKK777ENh8pDLSA2&t=633960551687981257.
Then the page loads incorrectly because the necessary javascript files failed to load.

I tried downloading the new control toolkit from ajax.codeplex.com and referencing the AjaxControlToolkit.dll within, clearing out temporary files for framework 2.0 & 4.0, but it made no difference.

I then read this post about further debugging the error. When I decrypted the requests to WebResource.axd, they showed paths that looked like yay:

• s|WebForms.js
• ZSystem.Web,4.0.0.0,,b03f5f7f11d50a3a|WebUIValidation.js|

So pipe delimited references to files seem to have been constructed incorrectly. It seems unlikely anyone would have any idea what to do about this, but what the heck...

Answer 1

add
RouteTable.Routes.Ignore( "*.js" );
to RegisterRoutes in Global.ascx.cs

Answer 2

You can download the source from codeplex and rebuild it for .NET 4.0 via VS 2010 but i don't think it will do much help.

If you want to use Routing which is part of .NET 3.5 (with SP1) what you have to do is to exlude *.axd handlers from being routed.

Here is a sample C# code to achieve that

RouteTable.Routes.Add(new Route("{resource}.axd/{*pathInfo}", new StopRoutingHandler()));