在vs2010 EF4中查询数据总是报错：

The property  on “XX” could not be set to a 'Int16' value. You must set this property to a non-null value of type ‘Int32’.”

原因及解决方法：实体对中的XX字段在数据库中的数据类型被设成了smallint型了，改成int后问题解决。

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