public ActionResult SaveLimitedBuyArea(int productId, string AreaID, int AreaType)
 {
     if (string.IsNullOrEmpty(AreaID))
     {
         return Json(new AjaxResponse { State = 0, Message = "限购区域不能为空" });
     }
     var model = new Product_LimitedBuy_Area
     {
         ProductID = productId,
         AreaID = AreaID,
         AreaType = AreaType
     };
     var ProductLimitedBuyAreaService = new ProductLimitedBuyAreaService();
     if (ProductLimitedBuyAreaService.SelectByProductId(productId).FirstOrDefault() != null)
     {
         if (ProductLimitedBuyAreaService.UpdateByProductId(AreaID, productId) > 0)
         {
             return Json(new AjaxResponse { State = 1, Message = "修改成功" });
         }
     }
     else
     {
         if (ProductLimitedBuyAreaService.Insert(model) > 0)
             return Json(new AjaxResponse { State = 1, Message = "添加成功" });
     }
     return Json(new AjaxResponse { State = 0, Message = "操作失败" });
 }
        public ActionResult BatchAddLimitedArea(string batchId, string content)
        {
            var ProductLimitedBuyAreaService = new ProductLimitedBuyAreaService();
            if (string.IsNullOrEmpty(batchId) && string.IsNullOrEmpty(content))
            {
                return Json(new AjaxResponse { State = 0, Message = "请选择商品或地区" });
            }
            if (!string.IsNullOrEmpty(batchId))
            {
                string[] strId = batchId.Split(',');
                var model = new Product_LimitedBuy_Area();
                foreach (var s in strId)
                {
                    if (ProductLimitedBuyAreaService.SelectByProductId(int.Parse(s)).FirstOrDefault() != null)
                    {
                        ProductLimitedBuyAreaService.UpdateByProductId(content, int.Parse(s));
                    }
                    else
                    {
                        model.ProductID = int.Parse(s);
                        model.AreaID = content;
                        model.AreaType = 1;
                        ProductLimitedBuyAreaService.Insert(model);
                    }
                }
            }

            return Json(new AjaxResponse { State = 1, Message = "设置成功" });
        }