static void Main(string[] args) { Parking carParking = Parking.Instance; if (carParking != null) { manager.CarParking = carParking; } carParking.AddCar(new Car(CarType.BUS, 1234, 1.0)); carParking.AddCar(new Car(CarType.MOTOCYCLE, 1326, 1245)); carParking.AddCar(new Car(CarType.PASSANGER, 1356, 1220)); carParking.AddCar(new Car(CarType.TRUCK, 5633, 1220)); try { manager.ShowMenu(); } catch (Exception ex) { //throw; PushMessage(ex.Message); } }