C# Stopwatch

	using System.Diagnostics;
	Console.WriteLine("Stopwatch starting ");
	var stopwatch = new Stopwatch();
	stopwatch.Start();
	// Wait 10 seconds
	Thread.Sleep(10000);
	stopwatch.Stop();
	TimeSpan elapsedTime = stopwatch.Elapsed;
	Console.WriteLine("Stopwatch elapsedTime " + elapsedTime.ToString(@"m\:ss\.fff"));
	Console.ReadLine();

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 Output : 

Stopwatch starting 

Stopwatch elapsedTime 0:10.030