使用EF 4在数据服务中公开Pocos时出错 [英] Error in exposing Pocos in Data services using EF 4

问题描述

我尝试将Pocos与EF一起使用（根据本文 -   http://blogs.msdn.com/b/adonet/archive/2009/05 /21/poco-in-the-entity-framework-part-1-the-experience.aspx ）
并尝试使用WCF数据服务公开它。请注意，edmx文件和上下文在1个程序集中，Pocos在单独的Web项目中处于单独的程序集和服务中。我收到了下面的错误，并寻找解决方案 

I tried using Pocos with EF (as per this article - http://blogs.msdn.com/b/adonet/archive/2009/05/21/poco-in-the-entity-framework-part-1-the-experience.aspx) and tried to expose it using WCF Data services. Note, the edmx file and context are in 1 assembly,  the Pocos are in separate assembly and service in a separate web project. I got the error below and looked for a solution 

我找到了这个帖子 -   http://social.msdn.microsoft.com/Forums/en/adodotnetdataservices/thread/601491ab-9c46-4fdf-88a7-c7392e5dbcdf 。

I found this thread - http://social.msdn.microsoft.com/Forums/en/adodotnetdataservices/thread/601491ab-9c46-4fdf-88a7-c7392e5dbcdf.

并尝试实施解决方案并添加到service.cs类，但仍然出现相同的错误。 

and tried implementing the solution and added to the service.cs class, but still the same error. 

 

 

protected override MycontainerContext CreateDataSource()<br/>  {
   MycontainerContext context = new MycontainerContext ();<br/>
   context.MetadataWorkspace.LoadFromAssembly(typeof(MycontainerContext).Assembly);<br/>
   return context;
  }

推荐答案

ok所以我调试了它，我可以清楚地看到modelcontainer正确加载所有objects.objectset。但该服务仍然会引发此错误。 

ok So I debugged it and I can clearly see modelcontainer correctly loads all objects.objectset. But the service still throws this error. 

有人请提供建议。

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