class Transmitter
    {
        private Timer TimeChecker;
        private BackgroundWorker worker;
        public Transmitter()
        {
            TimeChecker = new Timer();
            TimeChecker.Interval = 1000;
            TimeChecker.Elapsed += new ElapsedEventHandler(RunBackground);
            worker = new BackgroundWorker();
            worker.DoWork +=ReadData;
        }
        private void RunBackground( object source, ElapsedEventArgs e )
        {
            if (worker.IsBusy)
                return;
            else
            {
                worker.RunWorkerAsync();
            }
      
        }
        private void ReadData(object sender, DoWorkEventArgs e)
        {
            return;
        }
        public void RunTimer()
        {
            TimeChecker.Start();
        }
    }