C# Timer Class - Stop after a certain ammount of executions

Question

Hello,

I've been looking into the Timer class (http://msdn.microsoft.com/en-us/library/system.timers.timer.aspx), but the thing about the timer is, it's on going. Is there a way to stop it after one go? or after 5 go's?

Right now i am doing the following:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Timers;

namespace TimerTest
{
    class Program
    {
        private static System.Timers.Timer aTimer;
        static void Main(string[] args)
        {
            DoTimer(1000, delegate
            {
                Console.WriteLine("testing...");
                aTimer.Stop();
                aTimer.Close();
            });
            Console.ReadLine();
        }

        public static void DoTimer(double interval, ElapsedEventHandler elapseEvent)
        {
            aTimer = new Timer(interval);
            aTimer.Elapsed += new ElapsedEventHandler(elapseEvent);
            aTimer.Start();
        }
    }
}

Answer 1

Use System.Threading.Timer and specify a dueTime but specify a period of Timeout.Infinite.

Answer 2

public static void DoTimer(double interval, ElapsedEventHandler elapseEvent)
{
    aTimer = new Timer(interval);
    aTimer.Elapsed += new ElapsedEventHandler(elapseEvent);
    aTimer.Elapsed += new ElapsedEventHandler( (s, e) => ((Timer)s).Stop() );
    aTimer.Start();
}

Answer 3

Why don't you just have an int counter that initially start out at 0 and is incremented every time the ElapsedEventHandler is fired? Then you simply add a check in the event handler to Stop() the timer if the counter exceeds the number of iterations.

Answer 4

It is not on going the way you have it now. The Elapsed event is raised once and stops because you have called Stop. Anyway, change your code like the following to accomplish what you want.

static void Main()
{
  DoTimer(1000, 5, (s, e) => { Console.WriteLine("testing..."); });
  Console.ReadLine();
}

static void DoTimer(double interval, int iterations, ElapsedEventHandler handler)
{
  var timer = new System.Timers.Timer(interval);
  timer.Elapsed += handler;
  timer.Elapsed += (s, e) => { if (--iterations <= 0) timer.Stop(); };
  timer.Start();
}