protected void RaiseTrackingCompleted(TrackingCompletedEventArgs e)
        {
            if (disableCount > 0)
            {
                return;
            }
            var handler = TrackingCompleted;

            if (handler == null)
            {
                return;
            }
            handler.Invoke(this, e);
        }
 private void OnTrackingCompleted(object sender, TrackingCompletedEventArgs e)
 {
     RaiseTrackingCompleted(e);
 }