An Interval Timer for C#. Specify the minimum and maximum time between intervals, and let the timer do the rest!

IntervalTimer.cs

using System;
using System.Threading;

public sealed class IntervalTimer
{
    private Timer timer;
    private Random rand;
    private int min, max;

    public event Action Interval;

    public IntervalTimer()
    {
        timer = new Timer(Callback, null, -1, -1);
        rand = new Random();
    }

    private void Callback(object state)
    {
        try
        {
            Interval();
        }
        finally
        {
            timer.Change(rand.Next(min, max), Timeout.Infinite);
        }

    }

    /// <summary>
    /// Sets the interval of the timer in milliseconds.
    /// </summary>
    /// <param name="min">Minimum amount of time between intervals.</param>
    /// <param name="max">Maximum amount of time between intervals.</param>
    public void SetInterval(int min, int max)
    {
        this.min = min;
        this.max = max;
    }

    /// <summary>
    /// Starts the timer.
    /// </summary>
    public void Start()
    {
        timer.Change(min, Timeout.Infinite);
    }

    /// <summary>
    /// Stops the timer.
    /// </summary>
    public void Stop()
    {
        timer.Change(-1, -1);
    }

    /// <summary>
    /// Disposes the internal timer.
    /// </summary>
    public void Dispose()
    {
        timer.Dispose();
    }
}