private void BtnAjouterStage_Click(object sender, RoutedEventArgs e)
{
this.Visibility = System.Windows.Visibility.Hidden;
AjouterStageVue vueAjoute = new AjouterStageVue(User);
vueAjoute.Show();
this.Close();
}
private void BtnAjouterStagiare_Click(object sender, RoutedEventArgs e)
{
// a ameliorer, rajouter l entreprise
this.Visibility = System.Windows.Visibility.Hidden;
AjouterStageVue listeretudiant = new AjouterStageVue(User);
listeretudiant.Show();
this.Close();
}