匿名對象如何用反射獲取屬性的值public static object Query2(int id)        {            GuestBookDataContext dc = new GuestBookDataContext();            var query = from x in dc.tbGuestBooks                        where x.id == id                        select new { x.message, x.posttime };            var q = query.First();            return q;        }這個方法返回一個匿名對象var o = Sample.Query2(1);我在函數外接收到這個返回值后，如何顯示里邊的值.