void mGestionEventView_Closed(object sender, EventArgs e)
{
mGestionEventView = null;
}
private void gestion_Click(object sender, RoutedEventArgs e)
{
if (mGestionEventView == null)
{
mGestionEventView = new GestionEvenementView();
mGestionEventView.Closed += new EventHandler(mGestionEventView_Closed);
}
mGestionEventView.Hide();
mGestionEventView.Show();
}