private void MenuItem_Click(object sender, RoutedEventArgs e)
        {
            fenetre = new Parametres(_params)
            {
                DataContext = _params
            };
            fenetre.ValiderButton.Click += ParamValiderClick;
            fenetre.AnnulerButton.Click += ParamAnnulerClick;


            fenetre.Show();
        }
        private void MenuItem_Click(object sender, RoutedEventArgs e)
        {
            fenetre = new Parametres(_params) {DataContext = _params};
            fenetre.ValiderButton.Click += ParamValiderClick;
            fenetre.AnnulerButton.Click += ParamAnnulerClick;


            fenetre.Show();
        }