//
 // GET: /Payment/
 public void Index()
 {
     var checkout = TempData["checkoutInfo"] as Checkout;
     var cart = Session["Cart"] as List<CartItem>;
     var paypal = new PayPalManagement
     {
         Checkout = checkout,
         WebResponse = Response,
         CancelUrl = Url.Action("PaymentCancellation", null, null, Request.Url.Scheme),
         CheckoutReturnUrl = Url.Action("PaymentReceived", null, null, Request.Url.Scheme),
         Cart = cart
     };
     TempData["checkoutInfo"] = checkout;
     paypal.SetQuickCheckOut();
 }