public JsonResult LoadGenerateBusinessCarriersByTimespan(string startTime, string endTime)
{
string strErrText;
DDSystem dd = new DDSystem();
List<Carrier> listCarrier = dd.LoadGenerateBusinessCarriersByTimespan(startTime, endTime, LoginAccountId, LoginStaffName, out strErrText);
if (listCarrier == null)
{
throw new Exception(strErrText);
}
var ret = from c in listCarrier
select c.Name;
return Json(ret, JsonRequestBehavior.AllowGet);
}