using System.Timers;


 private static System.Timers.Timer aTimer;
        private static void SetTimer()
        {
            // Create a timer with a two second interval.
            aTimer = new System.Timers.Timer(5000);
            // Hook up the Elapsed event for the timer.
            aTimer.Elapsed += OnTimedEvent;
            aTimer.AutoReset = true;
            aTimer.Enabled = true;
        }

        private static void OnTimedEvent(System.Object source, ElapsedEventArgs e)
        {
            Console.WriteLine("The Elapsed event was raised at {0:HH:mm:ss.fff}",
                              e.SignalTime);
        }

        static void Main(string[] args)
        {
            SetTimer();
            Console.ReadKey();
        }