C# - Zeitmessung StopWatch

System.Diagnostics.Stopwatch s = new System.Diagnostics.Stopwatch();
s.Start(); // Start Zeitlauf

// Algorithmus
....
s.Stop(); // Ende Zeitlauf
TimeSpan timeSpan = s.Elapsed;
Console.WriteLine("Time: {0}h {1}m {2}s {3}ms", timeSpan.Hours, timeSpan.Minutes, timeSpan.Seconds, timeSpan.Milliseconds);