////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary> Event handler. Called by MainWindow for closing events. </summary>
///
/// <remarks> Jordi Hutjens, 26-10-2018. </remarks>
///
/// <param name="sender"> Learning Hub (object) raising the event. </param>
/// <param name="e"> Cancel event information. </param>
////////////////////////////////////////////////////////////////////////////////////////////////////
private void MainWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
udpmanager.UDPServerStop();
CloseApp();
Environment.Exit(Environment.ExitCode);
}