private void SaveKMLFile()
        {
            SaveFileDialog SFDlg = new SaveFileDialog();

            SFDlg.Filter = "KML File (*.kml)|*.kml";
            if (SFDlg.ShowDialog() == DialogResult.OK)
            {
                //ProgressBar
                Application.DoEvents();
                this.Cursor = Cursors.WaitCursor;

                string aFile = SFDlg.FileName;
                _currentLayer.SaveAsKMLFile(aFile);

                //Progressbar
                this.Cursor = Cursors.Default;
            }
        }