如何在窗口服务中为每 30 秒创建一次自动通知

    protected override void OnStart(string[] args)
    {
        try
        {
            TraceService("start service");
            timer.Elapsed += new ElapsedEventHandler(OnElapsedTime);
            timer.Interval = 30000;
            timer.Enabled = true;
        }
        catch (Exception ex)
        {
        }
    }
    protected override void OnStop()
    {
        try
        {
            timer.Enabled = false;
            TraceService("stopping service");
        }
        catch (Exception ex)
        {
        }
    }
    public void OnElapsedTime(object source, ElapsedEventArgs e)
    {
        try
        {
            var notification = new System.Windows.Forms.NotifyIcon()
            {
                Visible = true,
                Text = "Test Notify",
                BalloonTipTitle = "test title notify",
                BalloonTipText = "Testing"                    
            };
            notification.ShowBalloonTip(10000);
            //System.Threading.Thread.Sleep(10000);
            //notification.Dispose();
            TraceService("Another entry at " + DateTime.Now);
        }
        catch (Exception ex)
        {
            TraceService("StackTrace : " + ex.StackTrace);
            TraceService("Message : " + ex.Message);
        }
    }

}

}'

每 30 秒自动通知一次