HOw to Add break-point when Debug Window Service in C#.net

Service1.cs file code:

Timer timer;
        public Service1()
        {
            InitializeComponent();
        }

        public void OnDebug()
        {
            OnStart(null);
        }

        protected override void OnStart(string[] args)
        {
            // get today's date at 00:01 AM  
            DateTime time = DateTime.Today.AddMinutes(1);

            // if 00:01 AM has passed, get tomorrow at 00:01 AM  
            if (DateTime.Now > time)
                time = time.AddDays(1);

            // calculate milliseconds until the next 00:01 AM.  
            int timeToFirstExecution = (int)time.Subtract(DateTime.Now).TotalMilliseconds;

            // calculate the number of milliseconds in 24 hours.   
            int timeBetweenCalls = (int)new TimeSpan(24, 0, 0).TotalMilliseconds;

            // set the method to execute when the timer executes.   
            TimerCallback methodToExecute = Brijeshmethod;

            // start the timer.  The timer will execute "Brijeshmethod" when the number of seconds between now and   
            // the next 00:01 AM elapse.  After that, it will execute every 24 hours.   
            timer = new System.Threading.Timer(methodToExecute, null, timeToFirstExecution, timeBetweenCalls);
  
        }

        private void Brijeshmethod(object source)
        {
            //write your code here
        }

        protected override void OnStop()
        {
            Thread.Sleep(Timeout.Infinite);

        }



Program file:

/// <summary>
        /// The main entry point for the application.
        /// </summary>
        static void Main()
        {
            #if DEBUG
            Service1 myService = new Service1();
            myService.OnDebug();
            System.Threading.Thread.Sleep(System.Threading.Timeout.Infinite);
            #else
            ServiceBase[] ServicesToRun;
            ServicesToRun = new ServiceBase[]
            {
                new Service1()
            };
            ServiceBase.Run(ServicesToRun);
            #endif


        }