static void Main(string[] args) { Product p1 = new Product("1", "10", "toy"); Product p2 = new Product("2", "20", "cooker"); Product p3 = new Product("3", "30", "e-card"); Order order1 = new Order(); Order order2 = new Order(); order1.addProduct(p1); order1.addProduct(p3); order2.addProduct(p2); try { OrderService service = new OrderService(); service.addOrder(order1); service.addOrder(order2); Console.WriteLine(order1.ToString()); Console.WriteLine(service.searchOrder(order1.OrderID.ToString())); } catch (Exception1 e) { Console.WriteLine(e.Message); } catch (Exception2 e) { Console.WriteLine(e.Message); } Console.ReadKey(); }