public MainWindow() { InitializeComponent(); Aeroport_Model.GetExistingAeroports(); Avion_Model.GetExistingAvions(); Vol_Model.GetExistingVols(); Client_Model.GetExistingClients(); DataContext = this; Title = "AIR ATLANTIQUE"; Flights.ItemsSource = Vol_Model.ExistingVols; Clients.ItemsSource = Client_Model.ExistingClients; //MessageBox.Show(vols[0].DateProperty); }