// GET: ShoppingCart
public ActionResult Add(int id)
{
ShoppingCart cart = (ShoppingCart)Session["cart"];
if (cart == null)
{
cart = new ShoppingCart();
}
ShopModelData db = new ShopModelData();
TraSua trasua = db.TraSuas.Find(id);
if (trasua != null)
{
cart.InsertItem(trasua.mats, trasua.anhts, trasua.tents, (double)trasua.dongia);
}
Session["cart"] = cart;
return(Redirect(Request.UrlReferrer.ToString()));
}