Linq 集合比较

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List<RemindTbl> l_lstRemind = (from x in RemindTbl                                            where (from y in RemindTblOld where x.AttendeeAddress == y.AttendeeAddress && x.AttendeeAddress != ConstData.ScreenConst.RemindStandard select y).Any()                                            select x).ToList();

以上方法：比较两个集合数据，并取得RemindTbl中多余数据。