private void AirfieldInfoButton_Checked(object sender, RoutedEventArgs e) { if (airfieldinfo == null) { airfieldinfo = new AirfieldInformationWindow(airfield, this); } airfieldinfo.Closed += Airfieldinfo_Closed; airfieldinfo.Show(); }
private void Airfieldinfo_Closed(object sender, EventArgs e) { airfieldinfo = null; }