public void Start()
        {
            //PingClass-Objekt erstellen
            pingcl = new PingClass();
            pingcl.PingListCompleted += Pingcl_PingListCompleted;

            pingcl.Ping_all();
        }
        public void Start()
        {
            //PingClass-Objekt erstellen
            pingcl = new PingClass();
            pingcl.PingListCompleted += Pingcl_PingListCompleted;

            pingcl.Ping_all();
        }