cart2.cs

[HttpGet("/cart")]
public IActionResult CartHtml2()
{
    var cart = GetShoppingCart();
    var vm = new ShoppingCartViewModel();
    vm.Products = cart.Products.Select(x => new ShoppingCartProduct
    {
        Id = x.ProductId,
        Product = x.Name,
        Colour = x.Colour,
        Size = x.Size,
        Price = x.Price,
        Links = new List<Link>
        {
            new Link
            {
                Rel = "ProductDetail",
                Href = _urlHelper.Action("Product", new { Id = x.ProductId })
            }
        },
        Actions = new List<Link>
        {
            new Link
            {
                Rel = "ChangeQuantity",
                Href = _urlHelper.Action("ChangeQuantity", "Cart", new { Id = x.ProductId })
            }
        }
    });
    return View(vm);
}