private void DeleteMaintenance_Click(object sender, RoutedEventArgs e)
{
Maintenance RecupMaintenance = dataGrid.SelectedItem as Maintenance;
Maintenance LaMaintenance = new Maintenance();
LaMaintenance.Id_Maintenance = Convert.ToInt32(RecupMaintenance.Id_Maintenance);;
MaintenanceDAL SuppressionMaintenance = new MaintenanceDAL();
SuppressionMaintenance.SupprimerMaintenance(LaMaintenance);
this.NavigationService.Navigate(new GestionMaintenance());
}