private void MenuScreen() { Console.Clear(); Console.WriteLine("1 Register new Car Reservation"); Console.WriteLine("2 Update Car Reservation"); Console.WriteLine("3 List Reservations"); Console.WriteLine("4 List Available Cars"); Console.WriteLine("5 Register new Customer"); Console.WriteLine("6 Update Customer"); Console.WriteLine("7 List Customers"); Console.WriteLine("8 Reports"); Console.WriteLine("9 Quit"); while (true) { var key = Console.ReadLine().ToString(); switch (key) { case "1": controller.AddCarReservation(); GoToMainMenu(); break; case "2": controller.UpdateReservation(); GoToMainMenu(); break; case "3": ListReservations(); GoToMainMenu(); break; case "4": CarsList(); break; case "5": controller.AddCustomer(); GoToMainMenu(); break; case "6": controller.UpdateCustomer(); GoToMainMenu(); break; case "7": CustomerList(); GoToMainMenu(); break; case "8": Reports(); break; case "9": Environment.Exit(0); break; default: Console.WriteLine("Please, choose 1-8 number"); break; } } }