Question

I am trying to create my first Windows Service, but so sad… after I started the service manually from services.msc, the message ‘the service on local computer started and then stopped. some services stop automatically is they have no work to do’

I am sure there must be some mistake in my code…

namespace ConvertService
{
public partial class Service1 : ServiceBase
{
    public Service1()
    {
        this.ServiceName = "ConvertService";
        this.EventLog.Log = "Application";
    }
    static void main()
    {

        ServiceBase.Run(new Service1());
    }


    protected override void OnStart(string[] args)
    {
        Process pMP3 = new Process();
        pMP3.StartInfo.UseShellExecute = false;
        pMP3.StartInfo.RedirectStandardOutput = true;
        pMP3.StartInfo.FileName = @"d:\...path...\converter.exe";
        pMP3.StartInfo.Arguments = @"d:\...path...\tempamr.amr " + @"d:\...path...\tempmp3.mp3 " + @"-cmp3";
        pMP3.Start();
        pMP3.WaitForExit();
        Process pWAV = new Process();
        pWAV.StartInfo.UseShellExecute = false;
        pWAV.StartInfo.RedirectStandardOutput = true;
        pWAV.StartInfo.FileName = @"d:\...path...\converter.exe";
        pWAV.StartInfo.Arguments = @"d:\...path...\tempmp3.mp3 " + @"d:\...path...\tempwav.wav " + @"-cwav";
        pWAV.Start();
        pWAV.WaitForExit();

    }

    protected override void OnStop()
    {
    }
}

}

Forgive me if i did silly mistakes. This is my very very first Windows Service.

PS. I have already ticked ‘Allow service to interact with desktop’

Answer 1

Check to make sure the account your service runs under can access those files (including write access for the .wav and .mp3 files).

Your code might also be causing an unhandled exception. I’m not sure, but that might be visible in the event log. You can also get your service to write out messages explicitly to the event log (like in the case of an exception); check out this link: http://www.codeproject.com/KB/dotnet/simplewindowsservice.aspx