Linq→join中指定多个条件

还是习惯先撸一段SQL

 * FROM User_Pic P
 AND P.Guid = R.UserPicGuid
ORDER BY PicSize DESC

然后发现Linq中的join不能多条件...

结果找到解决方案如下

;
var pic = (from p in db.User_Pic
            join r in db.R_User_Pic
            on new { _guid = p.Guid, _id = ID }
            equals new { _guid = r.UserPicGuid, _id = r.UserID }
            orderby p.PicSize descending
            ).Skip().ToList();
).Skip()是取前两条数据...