using System;

using System.Threading;

​

public class Program

{

    public static void Main()

    {

        TimeSpan _100ms = new TimeSpan(0, 0, 0, 0, 100);

        TimeSpan ts = new TimeSpan();

        for (int i = 0; i < 15; i++) 

        {

            Console.WriteLine(ts.ToString(@"hh\:mm\:ss\.fff"));

            ts = ts.Add(_100ms);

        }

    }

}