public ActionResult get_BI_Station()
        {
            PatientStatisticsDB   _DB = new PatientStatisticsDB();
            List <CANServiceType> _RE = _DB.get_BI_Station();
            var serializer            = new JavaScriptSerializer {
                MaxJsonLength = Int32.MaxValue
            };
            var result = new ContentResult
            {
                Content     = serializer.Serialize(new { Res = _RE ?? new List <CANServiceType>() }),
                ContentType = "application/json"
            };

            return(result);
        }