public IEnumerable Graves_QueryPlanView(string areaId)
        {
            using (TombDBContext db = new TombDBContext())
            {
                var query = from s in db.SubArea
                            join p in db.subAreaPosition
                            on s.Id equals p.FSubArea into temp
                            from p in temp.DefaultIfEmpty()
                            where s.FareaId==areaId
                            orderby s.SubName ascending
                            select new 
                            {
                                s.Id,           //区域编号
                                s.SubName,      //区域名称
                                s.Boxes,        //区域默认箱数
                                s.FareaId,      //大区编号
                                MaxNum=db.graveTemp.Where(g=>g.subarea==s.Id).Max(g=>g.gname), //最大编号数
                                MinNum=db.graveTemp.Where(g=>g.subarea==s.Id).Min(g=>g.gname), //最小编号数
                                AllBox=db.graveTemp.Where(g=>g.subarea==s.Id).Count(), //所有箱数
                                posId=(p==null?0:p.pId), //位置编号
                return query.ToList();
            }
        }
private void GetDate()
{
  IEnumerable plan=Graves_QueryPlanView("xxoo");
foreache(var item in plan)
{
//这里该如何遍历
}
}