private void AddToCartForSession([FromServices] CartService srv, int prdId, int quantity)
{
var sessionCart = HttpContext.Session.GetString("Cart");
var cart = new Cart();
if (sessionCart == null)
{
srv.AddCartItemForSession(prdId, quantity, cart);
}
else
{
cart = JsonConvert.DeserializeObject <Cart>(sessionCart);
var prdCart = cart.CartItems.FirstOrDefault(x => x.ProductId == prdId);
srv.AddCartItemForSession(prdId, quantity, cart);
}
var strCart = JsonConvert.SerializeObject(cart);
HttpContext.Session.SetString("Cart", strCart);
ViewData["ItemCount"] = cart.Quantity;
}