/// <summary>
 /// 统计订餐人数
 /// </summary>
 /// <returns></returns>
 public JsonResult CountOrderNumber()
 {
     try
     {
         jr.Result = OrderDAL.CountOrderNumber(0);
         jr.Status = 200;
     }
     catch (Exception e)
     {
         jr.Status = 500;
         jr.Result = "系统繁忙";
         LogHelper.WriteLogFile(e.Message);
     }
     return(jr);
 }