Why is the timer not working in windows service?

Question

I know this is an already asked question, but I couldn't find any solution. Here is my service.

class Program : ServiceBase
{
    private  Timer _timer;
    public Program()
    {
        ServiceName = "PrintTime";
    }

    static void Main(string[] args)
    {
        Run(new Program());
    }

    protected override void OnStart(string[] args)
    {
        base.OnStart(args);
        _timer = new Timer(5000);
        _timer.Elapsed += _timer_Elapsed;
        _timer.Start();
    }

    void _timer_Elapsed(object sender, ElapsedEventArgs e)
    {
        WriteTimeToFile();
    }

    protected override void OnStop()
    {
        _timer.Stop();
    }

    private void WriteTimeToFile()
    {
        using (FileStream fs = new FileStream(@"d:\mylog.txt", FileMode.Append,            FileAccess.ReadWrite))
        {
            StreamWriter streamWriter = new StreamWriter(fs);
            streamWriter.Write(DateTime.Now.ToShortTimeString());
            streamWriter.Close();
            fs.Close();
        }
    }

}

As you can see I want to write currentTime into my Mylog.txt file every 5 seconds, but nothing happens after even 2 minutes. If I put the WriteTimeToFile() function into OnStart method it works fine, but not in a timer.

Any help would be greatly appreciated.

Answer 1

What is the timer's namespace? It needs to be System.Timers.Timer or System.Threading.Timer.

See here: Best Timer for using in a Windows service