linq group by多个字段,返回多个字段.

直接上例子.
var wflist = from u in db.TWelFare  
  where u.fy_no == fy_no  
  orderby u.we_no  
  group u by new { weno = u.we_no, wename = u.we_name } into g  
  select new { g.Key.weno, g.Key.wename };