private void OnFailed(object sender, SimplePingFailedEventArgs e)
        {
            statusLabel.Text = "failed: " + GetShortError(e.Error);

            pinger.Stop();
        }
        private void OnFailed(object sender, SimplePingFailedEventArgs e)
        {
            Console.WriteLine("failed: " + GetShortError(e.Error));

            Stop();
        }