system.web.extension问题

Question

THIS is the error i am getting when i am compiling my project  

分析器错误消息：无法加载文件或程序集'System.Web.Abstractions，

Version = 2.0.0.0，Culture = neutral，PublicKeyToken = 31bf3856ad364e35'或其中一个

依赖性。系统找不到指定的文件

Source File: C:\Documents and Settings\Administrator\My Documents\data\Web-page adversting

impression 2\web.config    Line: 25 

Assembly Load Trace: The following information can be helpful to determine why the 

assembly 'System.Web.Abstractions, Version=2.0.0.0, Culture=neutral, 

PublicKeyToken=31bf3856ad364e35' could not be loaded.

Answer 1

仔细检查 System.Web.Abstractions DLL设置为“Copy Local = true”（右键单击参考属性）。