ThreadAndTimer.cs

using System;
using System.Timers;
using System.Threading;

public class Example
{
    private System.Timers.Timer aTimer;
    private int count = 0;
    private Thread thread = Thread.CurrentThread;

    public static void Main()
    {
        new Example().Demo();
    }

    private void Demo()
    {
        SetTimer();
        try
        {
            Thread.Sleep(1000 * 60);
        }
        catch (ThreadInterruptedException e)
        {
            aTimer.Stop();
            aTimer.Dispose();
        }
    }

    private void SetTimer()
    {
        aTimer = new System.Timers.Timer(1000);
        aTimer.Elapsed += OnTimedEvent;
        aTimer.AutoReset = true;
        aTimer.Enabled = true;
    }

    private void OnTimedEvent(Object source, System.Timers.ElapsedEventArgs e)
    {
        ++count;
        if (count >= 5)
        {
            thread.Interrupt();
        }
    }
}