public bool ShortcutExpressCheckout(string amt, ref string token, ref string retMsg)
    {
        if (bSandbox)
        {
            pEndPointURL = pEndPointURL_SB;
            host         = host_SB;
        }

        string returnURL = "https://localhost:44300/Checkout/CheckoutReview.aspx";
        string cancelURL = "https://localhost:44300/Checkout/CheckoutCancel.aspx";

        NVPCodec encoder = new NVPCodec();

        encoder["METHOD"]                         = "SetExpressCheckout";
        encoder["RETURNURL"]                      = returnURL;
        encoder["CANCELURL"]                      = cancelURL;
        encoder["BRANDNAME"]                      = "Wingtip Toys Sample Application";
        encoder["PAYMENTREQUEST_0_AMT"]           = amt;
        encoder["PAYMENTREQUEST_0_ITEMAMT"]       = amt;
        encoder["PAYMENTREQUEST_0_PAYMENTACTION"] = "Sale";
        encoder["PAYMENTREQUEST_0_CURRENCYCODE"]  = "USD";

        // Get the Shopping Cart Products
        using (JessesHockeyShop.Logic.ShoppingCartActions myCartOrders = new JessesHockeyShop.Logic.ShoppingCartActions())
        {
            List <CartItem> myOrderList = myCartOrders.GetCartItems();

            for (int i = 0; i < myOrderList.Count; i++)
            {
                encoder["L_PAYMENTREQUEST_0_NAME" + i] = myOrderList[i].Product.ProductName.ToString();
                encoder["L_PAYMENTREQUEST_0_AMT" + i]  = myOrderList[i].Product.UnitPrice.ToString();
                encoder["L_PAYMENTREQUEST_0_QTY" + i]  = myOrderList[i].Quantity.ToString();
            }
        }

        string pStrrequestforNvp = encoder.Encode();
        string pStresponsenvp    = HttpCall(pStrrequestforNvp);

        NVPCodec decoder = new NVPCodec();

        decoder.Decode(pStresponsenvp);

        string strAck = decoder["ACK"].ToLower();

        if (strAck != null && (strAck == "success" || strAck == "successwithwarning"))
        {
            token = decoder["TOKEN"];
            string ECURL = "https://" + host + "/cgi-bin/webscr?cmd=_express-checkout" + "&token=" + token;
            retMsg = ECURL;
            return(true);
        }
        else
        {
            retMsg = "ErrorCode=" + decoder["L_ERRORCODE0"] + "&" +
                     "Desc=" + decoder["L_SHORTMESSAGE0"] + "&" +
                     "Desc2=" + decoder["L_LONGMESSAGE0"];
            return(false);
        }
    }
        public ShoppingCartObject(string shoppingCartID)
        {
            ShoppingCartActions scActions = new ShoppingCartActions();

            this.sc_CartItemList = scActions.GetCartItems(shoppingCartID);
        }