private void OnCreatedCoordinateSystem(CreatedCoordinateSystemEventArgs e)
        {
            var eh = CreatedCoordinateSystem;

            if (eh != null)
            {
                eh(this, e);
            }
        }
 private void OnCreatedCoordinateSystem(CreatedCoordinateSystemEventArgs e)
 {
     var eh=CreatedCoordinateSystem;
     if (eh!=null)
         eh(this, e);
 }