After. NET is upgraded to 4.0, 'System. Windows, version = 2.0.5.0, culture = neutral, publickeytoken = 7cec85d7bea77

 

 

 

 

'System. Windows, version = 2.0.5.0, culture = neutral, publickeytoken = 7cec85d7bea7798e' or

One of its Dependencies. The system cannot find the file specified

Line 15: <Form ID = "form1" runat = "server"> line 16: <asp: scriptmanager runat = "server" id = "smscriptmanager"

Enablepagemethods = "true" ajaxframeworkmode = "enabled"> line 17: </ASP: scriptmanager> line 18:

If you log in for the first time, this page will report yellow pages and prompt that there is a problem ..

But you just need to refresh it...

The solution is as follows:

1: Download and update the latest Silverlight version on msdn.

2: Find c: \ Program Files \ microsoft Silverlight \ 4.0.60831.0

Such a folder. Find system. Windows. dll

3: copy to your project and reference it. Clean solution and rebuild solution.

4: The error is no longer reproduced.