private void SaveLayer(BikeTouringGISLayer obj)
 {
     if (obj != null)
     {
         obj.Save(GetWayPoints(obj));
     }
 }
 private void SaveLayerAs(BikeTouringGISLayer obj)
 {
     if (obj != null)
     {
         Microsoft.Win32.SaveFileDialog saveFileDialog = new Microsoft.Win32.SaveFileDialog();
         saveFileDialog.Filter           = "GPX files (*.gpx)|*.gpx";
         saveFileDialog.InitialDirectory = DropBoxHelper.GetDropBoxFolder();
         if (saveFileDialog.ShowDialog() == true)
         {
             obj.Save(GetWayPoints(obj), saveFileDialog.FileName);
         }
     }
 }