/// <summary>
        /// 获取购物车
        /// </summary>
        /// <param name="CustomerID"></param>
        /// <returns></returns>
        public ShopCart GetShopCart(int CustomerID)
        {
            string   key      = "ShopCart_" + CustomerID.ToString();
            ShopCart shopCart = new ShopCart();

            if (_IRedisServer.KeyExists(key))
            {
                shopCart = _IRedisServer.GetStringKey <ShopCart>(key);
            }
            else
            {
                return(null);
            }
            return(shopCart);
        }