private List<Game> games = new List<Game>();
        private double totalPrice = 0.0;

        private struct Game {
            public int gameId;
            public string platform;
            public string rating;
            public string type;
            public int quantity;
            public double price;
            public string title;
            public int quantityInCart;
        }
        
        private void buttonAddToCart_Click(object sender, EventArgs e)
        {
            if (listBoxGames.SelectedItem == null)
                return;

            string selectedItem = listBoxGames.SelectedItem.ToString();
            int gameId = int.Parse(selectedItem.Split(' ')[0]);
            for (int i = 0; i != games.Count; i++)
            {
                Game game = games[i];
                if (game.gameId == gameId)
                {
                    Console.WriteLine($"{game.quantity} - {game.quantityInCart}");
                    if (game.quantity - game.quantityInCart == 0)
                    {
                        MessageBox.Show($"This item has a quantity of {game.quantity} and you currently have {game.quantityInCart} in your cart!", "Out of stock", MessageBoxButtons.OK, MessageBoxIcon.Error);
                        return;
                    }
                    listBoxCart.Items.Add($"{game.gameId} - {game.title}");
                    textBoxTotalPrice.Text = (totalPrice += game.price).ToString("C");
                    game.quantityInCart++;
                    return;
                }
            }
        }