public ActionResult Checkout(string receiver, string phone, string address)
 {
     User user = (User)Session["USER"];
     if (user != null)
     {
         CartObj cart = (CartObj)Session["CART"];
         if (cart != null)
         {
             DateTime date = DateTime.Now;
             OrderDAO daoOrder = new OrderDAO();
             OrderDetailsDAO daoDetails = new OrderDetailsDAO();
             Order order = new Order() { phone = phone, receiver = receiver, addressShip = address, username = user.username, orderDate= date};
             daoOrder.Add(order);
             int currentID = daoOrder.GetCurrentOrderID();
             foreach(var item in cart.cart)
             {
                 OrderDetail details = new OrderDetail()
                 {
                     orderID = currentID,
                     phoneID = item.Key.phoneID,
                     price = item.Key.price,
                     quantity = item.Value,
                     discount = item.Key.discount
                 };
                 daoDetails.Add(details);
                 PhoneDAO daoPhone = new PhoneDAO();
                 daoPhone.UpdateQuantity(item.Value,item.Key.phoneID);
             }
             Session["CART"] = null;
         }
     }
     return RedirectToAction("Index", "Home", new { area = "" });
 }