public ActionResult SimpleProduct(AddToCartViewModel viewmodel)
        {
            var cookie      = Request.Cookies[FormsAuthentication.FormsCookieName];
            var ticket      = FormsAuthentication.Decrypt(cookie.Value);
            var UserAccount = ticket.Name.Split(',')[1];

            var product_service = new ProductsService();

            product_service.AddToCart(viewmodel, UserAccount);

            var tmp = viewmodel;

            return(Redirect("~/orders/checkorder"));
        }