public ActionResult AddCost([DataSourceRequest] DataSourceRequest request, ConfigDeliveryCostModel model)
        {
            try
            {
                if (model != null)
                {
                    var service = new ConfigDeliveryCostService();

                    var product = DataTransfer.Transfer<Config_Delivery_Cost>(
                        model,
                        typeof(ConfigDeliveryCostModel));

                    model.ID = service.Add(product);
                }

                return Json(new[] { model }.ToDataSourceResult(request, ModelState));
            }
            catch
            {
                return View();
            }
        }
        public ActionResult ModifyCost([DataSourceRequest] DataSourceRequest request, ConfigDeliveryCostModel model)
        {
            if (model != null && ModelState.IsValid)
            {
                var service = new ConfigDeliveryCostService();

                var cost = DataTransfer.Transfer<Config_Delivery_Cost>(
                    model,
                    typeof(ConfigDeliveryCostModel));

                service.Modify(cost);
            }

            return Json(new[] { model }.ToDataSourceResult(request, ModelState));
        }