EntityFramework报错

{"The Entity Framework provider type ‘System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer‘ registered in the application config file for the ADO.NET provider with invariant name ‘System.Data.SqlClient‘ could not be loaded. Make sure that the assembly-qualified name is used and that the assembly is available to the running application. See http://go.microsoft.com/fwlink/?LinkId=260882 for more information."}

在UI层调用了DB层的方法，报以上错误

 解决办法：

在UI层也加载EntityFramework.dl文件！

EntityFramework报错

原文：http://www.cnblogs.com/kevinzhk/p/7762638.html