Linq 集合比较

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。