using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Diagnostics;

namespace TimeSpanTest
{
    class Program
    {
        static void Main(string[] args)
        {
            TimeSpan TS = new TimeSpan(0, 0, 0, 2, 500);
            Stopwatch SW = new Stopwatch();

            SW.Start();

            Console.WriteLine("Start:[{0}]",DateTime.Now);

            while (TS > SW.Elapsed) System.Threading.Thread.Sleep(100);
            
            Console.WriteLine("End:[{0}]",DateTime.Now);

            return;
        }
    }
}