public async Task <JsonResult> COIGet()
 {
     try{
         var coid = Guid.Parse(Request.Form["id"]);
         var aid  = Guid.Parse(Request.Form["aid"]);
         var data = CustomerOrderItemService.GetByCOID(coid, aid);
         var vms  = CustomerOrderItemService.SetSubDatas(data);
         return(Success(vms));
     }catch { return(Failed(MessageUtilityService.ServerError())); }
 }