Problem in windows service

using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Diagnostics;
using System.ServiceProcess;
using System.Text;
using System.Collections.Generic;
using System.ComponentModel;


namespace MyFirstWindowsService
{
    public class MyFirstWindowsService
    {

        static void Main()
        {
            ServiceBase[] ServicesToRun;
            Debugger.Break();
            ServicesToRun = new ServiceBase[] 
		{ 
			new MyFirstWindowsService() 
		};
            ServiceBase.Run(ServicesToRun);
        }


        public partial class MyFirstWindowsService : ServiceBase
        {

            public MyFirstWindowsService()
            {
                InitializeComponent();
            }

            protected override void OnStart(string[] args)
            {
                timer.Enabled = true;
                timer.Interval = 10000;
                timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);
            }

            protected override void OnStop()
            {
            }
            private System.ComponentModel.IContainer components = null;

            /// <summary>
            /// Clean up any resources being used.
            /// </summary>
            /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
            protected override void Dispose(bool disposing)
            {
                if (disposing && (components != null))
                {
                    components.Dispose();
                }
                base.Dispose(disposing);
            }



            /// <summary>
            /// Required method for Designer support - do not modify
            /// the contents of this method with the code editor.
            /// </summary>
            System.Timers.Timer timer = new System.Timers.Timer();
            public void MyFirstWindowsService()//Problem is Here
            {
                InitializeComponent();
                this.CanStop = true;
                this.CanPauseAndContinue = true;

            }
            private void InitializeComponent()
            {
                components = new System.ComponentModel.Container();
                this.ServiceName = "Service1";
            }

            protected void timer_Elapsed(object source, System.Timers.ElapsedEventArgs aa)
            {
                System.Console.WriteLine("myTimer event occurred");
                //Here we can write beautiful code that performs some our own tasks.
            }
        }

    }
}