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 };
linq group by多个字段,返回多个字段.,布布扣,bubuko.com
原文：http://www.cnblogs.com/fumj/p/3615485.html