I am using Visual Studio 2012 C Sharp (C#) and SQL Server Express. I am trying to go through the MSDN Walkthrough: Display Data from a SQL Server Database in a DataGrid Control. I have added the recommended AdventureWorksLT2008 sample database. Here are the instructions I followed:I am using Visual Studio 2012 C Sharp (C#) and
阅读背景：
无法将类型System.Data.Entity.DbSet 隐式转换为System.Data.Objects.ObjectQuery
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