private void mnuSimulation_Click(object sender, RoutedEventArgs e) { if (_simDlg == null) { _simDlg = new SimControlPanel(); _simDlg.FormClosed += new FormClosedEventHandler(_simDlg_FormClosed); _simDlg.Show(); } _simDlg.BringToFront(); }
void _simDlg_FormClosed(object sender, FormClosedEventArgs e) { _simDlg = null; }