public string GetSeatLayoutListJson()
        {
            List <SeatLayout>      list       = new List <SeatLayout>();
            ISeatManageService     seatManage = new WcfServiceForSeatManage.SeatManageDateService();
            List <ReadingRoomInfo> rooms      = seatManage.GetReadingRoomInfo(null);

            foreach (var item in rooms)
            {
                SeatLayout layOut = seatManage.GetRoomSeatLayOut(item.No);
                list.Add(layOut);
            }
            string s = Newtonsoft.Json.JsonConvert.SerializeObject(list);

            return(s);
        }