void ofd_FileOkSaveKML(object sender, CancelEventArgs e)
        {
            AirNavigationRaceLiveMain.SetStatusText("");
            double channelRadius;
            double altitude;

            // retrieve points from selected tree element

            if (ListOfRouteNames.Count == 0)
            {
                return;
            }

            bool ret = double.TryParse(txtChannelWidth.Text, out channelRadius);

            if (!ret)
            {
                channelRadius = DEFAULT_CHANNEL_WIDTH / 2.0;
            }
            else
            {
                channelRadius = channelRadius / 2.0;
            }

            ret = double.TryParse(txtHeight.Text, out altitude);
            if (!ret)
            {
                altitude = 300;
            }

            bool hasRoundedCorners = chkUseRoundedCorners.Checked;

            SaveFileDialog sfd     = sender as SaveFileDialog;
            string         fname   = sfd.FileName;
            ANRData        anrData = new ANRData();

            anrData.generateParcour(ListOfRoutes, ListOfRouteNames, ListOfNBL, ListOfNBLNames, HAS_MARKERS, CREATE_PROH_AREA, USE_STANDARD_ORDER, channelRadius, altitude, hasRoundedCorners);
            Document document = anrData.Document;
            Kml      kml      = new Kml();

            kml.Feature = document;
            KmlFile file = KmlFile.Create(kml, false);

            using (var stream = System.IO.File.Open(fname, FileMode.Create, FileAccess.Write, FileShare.Read))
            {
                file.Save(stream);
            }
            AirNavigationRaceLiveMain.SetStatusText(string.Format("Route Generator - saved file {0}", sfd.FileName));
        }
        private void btnExportParcourCoord_Click(object sender, EventArgs e)
        {
            string      fnameIn  = txtInputFile.Text;
            string      fnameOut = txtOutputFile.Text;
            XmlDocument xmlDoc   = new XmlDocument();

            try
            {
                xmlDoc.Load(fnameIn);
                ANRData       anr = new ANRData();
                List <string> lst = anr.exportParcourCoordinates(xmlDoc);
                File.WriteAllLines(fnameOut, anr.exportParcourCoordinates(xmlDoc).ToArray());
            }
            catch (ApplicationException ex1)
            {
                MessageBox.Show(ex1.Message, "Parcour import from *.kml", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString(), "Error while Parsing kml File");
            }
            btnExportParcourCoord.Enabled = false;
            btnClear.Enabled = false;
        }