public IActionResult GetMainCommodity()      //返回商品
        {
            CommodityDetailsView commodity = new CommodityDetailsView();

            commodity = commdDetailService.DisplayCommodityDetails(Global.GCommodityID);
            string str = JsonConvert.SerializeObject(commodity);

            return(new ContentResult {
                Content = str, ContentType = "application/json"
            });
        }
 public CommodityDetailsView DisplayCommodityDetails(string commodityId)
 {
     if (commodityId == "")
     {
         return(null);
     }
     else
     {
         Commodity            newCommodity        = _context.Commodities.FirstOrDefault(c => c.CommodityId == commodityId);
         CommodityDetailsView newCommodityDetails = new CommodityDetailsView();
         newCommodityDetails.commodityId = commodityId;
         newCommodityDetails.name        = newCommodity.Name;
         newCommodityDetails.intro       = newCommodity.Description;
         newCommodityDetails.price       = newCommodity.Price;
         newCommodityDetails.imgUrl      = newCommodity.Url;
         newCommodityDetails.storage     = newCommodity.Storage;
         newCommodityDetails.shopId      = newCommodity.ShopId;
         newCommodityDetails.category    = newCommodity.Category;
         newCommodityDetails.errorCode   = 0;
         return(newCommodityDetails);
     }
 }