Linq结果直接返回实体对象

var result=from s in db.Students
                 join c in db.Classes on s.ClassID equals c.ClassID
                  select new
                       {
                           Id = s.Id,
                           Name = c.Name,
                           Address = c.Address
                       };

IEnumerable<User> result = from s in db.Students
                        join c in db.Classes on s.ClassID equals c.ClassID
                       select new User
                       {
                           Id = s.Id,
                           Name = c.Name,
                           Address = c.Address
                       };