linq into查询



            //1.into用于group子句
            var query = from guest in gList group guest by guest.Name.Substring(0, 1) into grguest orderby grguest.Key descending select grguest;

            var query2 = from guest in gList group guest by guest.Name.Substring(0, 1) into grguest orderby grguest.Key ascending select grguest; //2.select 子句中的into子句

            var query3 = from guest in gList select new { NewName = guest.Name, NewAge = guest.Age } into newguest orderby newguest.NewAge select newguest;