private void Editer_MouseDown(object sender, MouseButtonEventArgs e)
 {
     if (e.ClickCount >= 2)
     {
         ObjetGestion OB = ((FrameworkElement)sender).DataContext as ObjetGestion;
         if (OB != null)
         {
             OB.Editer = !OB.Editer;
         }
     }
 }
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            Button B = sender as Button;

            if (B == null)
            {
                return;
            }
            ObjetGestion T = B.DataContext as ObjetGestion;

            if (T == null)
            {
                return;
            }

            T.Editer = false;
        }