Benchmarking helper

As lazy as a programmer should always be, I've created a ConsoleStopWatch class for my previous article:

using (ConsoleStopwatch consoleStopwatch = new ConsoleStopwatch("sumOf += myHugeArray[i, j, k, l]"))
{
    for (int i = 0; i < DIM0; i++)
    {
        for (int j = 0; j < DIM1; j++)
        {
            for (int k = 0; k < DIM2; k++)
            {
                for (int l = 0; l < DIM3; l++)
                {
                    sumOf += myHugeArray[i, j, k, l];
                }
            }
        }

    }

    consoleStopwatch.Report("{0}", sumOf);
}

Here's my first try:

class ConsoleStopwatch : System.Diagnostics.Stopwatch, IDisposable
{
    private string message = String.Empty;
    bool messageDisplayed = false;

    public ConsoleStopwatch()
    {
        base.Start();
    }

    public ConsoleStopwatch(string message)
    {
        this.message = message;

        base.Start();
    }

    private void InternalReport(string report)
    {
        Console.WriteLine("[{0}] {1} {2}", base.Elapsed, message, report);
    }

    public void Report(string format, params object[] args)
    {
        InternalReport(String.Format(format, args));

        this.messageDisplayed = true;
    }

    #region IDisposable Members

    public void Dispose()
    {
        base.Stop();

        if (!this.messageDisplayed)
        {
            InternalReport("");
        }
    }

    #endregion
}

Didn't quite like the implementation. Hope to post it right here after some serious refactoring.