private static void PlaceOrder(Library.Customer cust, StoreLocation store, Order order, List <Library.Product> products) { int prodChoice, qtyChoice = -1; try { Console.WriteLine($"{store.StoreName} has in stock: \n"); store.DisplayInventoryCatalog(); //ask if they would like to purchase an item Console.WriteLine("Please select an item to purchase"); prodChoice = int.Parse(Console.ReadLine()); Console.WriteLine("Please enter a quantity you would like purchase"); qtyChoice = int.Parse(Console.ReadLine()); order.AddToCart(products[prodChoice], qtyChoice); } catch (FormatException) { Console.WriteLine("You have selected an invalid option. Please allow an associate to assist you with your transaction."); } }