摘要:
通过使用默认的相等比较器对值进行比较返回序列中的非重复元素。
var v = (from a in _TaoXueDBEntities.LessonClass
join b in _TaoXueDBEntities.Lesson on a.LessonID equals b.LessonID
where b.TeacherUIN == uin && b.Status != 0
select b).Distinct();