/// <summary>
/// démarre l'application interface après avoir affiché le dialogue de chargement
/// </summary>
/// <param name="e"></param>
protected override async void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
await Task.Delay(500);
splashScreen.SetProgress("", 3, 4);
MainWindow.Show();
splashScreen.Close();
splashScreen = null;
}
