Fixing A .NET 2.0 AJAX Application After Upgrading To .NET 3.5

If you have been using ASP.NET AJAX in your .NET 2.0 application and decided to upgrade to .NET 3.5 you might have noticed you get build errors and you application no longer works.

Joe Stagner has posted a really useful article for those that are upgrading from .NET 2.0 to .NET 3.5. It is actually very simple to upgrade to .NET 3.5 but some people might have problems and not know why so I thought I would share this posting with others.

The build error you recieve is that System.Web.Extensions Version 1.0.61025.0 cannot be found.

Joe’s article can be found here: http://blogs.msdn.com/joestagner/…