Papertimer

public class PaperTimer : IDisposable
{
    private readonly Stopwatch _stopwatch;
    private readonly Action<Stopwatch> _action;
    public PaperTimer(Action<Stopwatch> action = null)
    {
        _action = action ?? (s => Console.WriteLine(s.ElapsedMilliseconds));
        _stopwatch = new Stopwatch();
        _stopwatch.Start();
    }
    public void Dispose()
    {
        _stopwatch.Stop();
        _action(_stopwatch);
    }
    public Stopwatch Watch
    {
        get { return _stopwatch; }
    }
}