I have an application that has been converted from VS2005 2.0 framework to VS2008 3.5 framework. I am attempting to add the ability to use the AjaxControlToolkit DLL [AjaxControlToolkit-Framework3.5SP1-DllOnly.zip] download only within my project. I have followed the configuration setups to get the project to build, and have not been successful in getting a control to load.
How do I install and use the ASP.NET AJAX Control Toolkit in my .NET 3.5 web applications?
and
I am currently running into an error after adding all the web.config settings to my web application.
Server Error in '/' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: 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.
Source Error:
<compilation defaultLanguage="vb" debug="true">
<assemblies>
<add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</assemblies>
<expressionBuilders>
I imagine others have had this problem, but can't find any resources that will help me fix this. Thanks in advance for the help.
Best Answer
That is the old version. Change the line in your web.config to use the 3.5 version:
(Yes, this is a common conversion error.)