private void artistesButton_Click(object sender, RoutedEventArgs e) { if (mArtistes == null) { mArtistes = new Artistes(); mArtistes.Closed += new EventHandler(mArtistes_Closed); } mArtistes.Hide(); mArtistes.Show(); }
void mArtistes_Closed(object sender, EventArgs e) { mArtistes = null; }