/// <summary>
        /// button Traceroute_Click
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        async private void buttonTrace_Click(object sender, EventArgs e)
        {
            Task <string> t = Task.Run(() => Fonctions.TraceRoute(textBoxAdress.Text.Trim()));

            buttonTrace.Enabled = false;    // Desactiver le button pendant le trace route
            string reponseTrace = await t;  // Attendre que la tâche t finisse;

            buttonTrace.Enabled = true;     // Réactiver le boutton traceroute
            textBoxResultat.AppendText(reponseTrace);
        }