摘要：It is not necessary to wrap your SaveChanges call in another TransactionScope if; If you are not trying to use multiple context in the same transaction. If you are not making multiple SaveChanges calls even with the same context. For instance, one SaveChanges after Delete, another SaveChanges after 阅读全文

摘要：http://support.microsoft.com/kb/2796236 阅读全文

摘要：地址： http://msdn.microsoft.com/zh-cn/data/jj200620 里面有视频和操作步骤。 阅读全文