public async Task <JsonResult> Delete(string id)
        {
            var isDelete = await ProductBLL.Delete(id);

            if (isDelete)
            {
                return(Json(new { success = "true" }));
            }
            return(Json(new { success = "false" }));
        }
    private void Del()
    {
        string id = Request.QueryString["productId"];

        if (!string.IsNullOrEmpty(id))
        {
            int productId = 0;
            int.TryParse(id, out productId);

            productBLL.Delete(productId);
            Response.Write("{success: true}");
        }
        else
        {
            Response.Write("{success: false}");
        }
        Response.End();
    }
    protected void rpt_ItemCommand(object source, RepeaterCommandEventArgs e)
    {
        int         productId  = int.Parse(e.CommandArgument.ToString());
        IProductBLL productBLL = (IProductBLL)SpringContext.Context.CreateSecurityProxyInstance("ProductBLL");

        switch (e.CommandName.ToLower())
        {
        case "delete":
            productBLL.Delete(productId);
            Response.Redirect("ProductList.aspx", true);
            break;

        case "putcar":;
            Product product = productBLL.Select(productId);

            OrderProduct orderProduct = new OrderProduct();
            orderProduct.Num         = 1;
            orderProduct.ProductID   = productId;
            orderProduct.ProductName = product.ProductName;

            IUserBLL   userBLL   = (IUserBLL)SpringContext.Context.CreateSecurityProxyInstance("UserBLL");
            ICustomBLL customBLL = (ICustomBLL)SpringContext.Context.CreateSecurityProxyInstance("CustomBLL");
            if (customBLL.Select(userBLL.UserID).IsMember)
            {
                orderProduct.Price = product.MemberPrice;
            }
            else
            {
                orderProduct.Price = product.NormalPrice;
            }

            IShopCarBLL shopCarBLL = (IShopCarBLL)SpringContext.Context.CreateSecurityProxyInstance("ShopCarBLL");
            shopCarBLL.Add(orderProduct);
            Response.Redirect("ShopCar.aspx", true);
            break;

        default:
            break;
        }
    }