C#

using System;
using System.IO;
using System.ServiceProcess;
using System.ComponentModel;
using System.Configuration;
using System.Configuration.Install;

namespace ServiceTest
{
	public class MainClass : ServiceBase
	{
		public static void Main(string[] args)
		{
            ServiceBase.Run(new MainClass());
		}

        protected override void OnStart(string[] args)
        {
			Console.WriteLine ("Started OK");
			
			base.OnStart (args);
		}
		
		protected override void OnStop ()
		{
			Console.WriteLine ("Stoppeds OK");
			
			base.OnStop ();
		}
	}
	
    [RunInstaller(true)]
    public class MainClassInstaller : Installer
    {
        public MainClassInstaller()
        {
            ServiceProcessInstaller process = new ServiceProcessInstaller();

            process.Account = ServiceAccount.LocalSystem;

            ServiceInstaller serviceAdmin = new ServiceInstaller();

            serviceAdmin.StartType = ServiceStartMode.Manual;
            serviceAdmin.ServiceName = "Service Test";
            serviceAdmin.DisplayName = "Service Test";

            Installers.Add(process);
            Installers.Add(serviceAdmin);
        }
    }
}