static void ListerVoyages() { Console.Clear(); Console.WriteLine("LISTE DES VOYAGES\n"); List <Voyage> listeVoyages = serviceVoyage.GetVoyages.ToList(); for (int i = 0; i < listeVoyages.Count; i++) { Voyage voyage = listeVoyages[i]; Console.WriteLine((i + 1) + ". " + voyage.getDestination()); } var numeroVoyage = Console.ReadLine(); OptionVoyage(listeVoyages[numeroVoyage]); }