using System;
using System.Threading;

public class ThreadHolder
{
    public Thread Thread;
}

public class Test
{
    static void Main()
    {
        ThreadHolder th = new ThreadHolder();
        ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadProc), th);
        Thread.Sleep(100);
        th.Thread.Abort();
        Thread.Sleep(100);
    }

    static void ThreadProc(object state)
    {
        Console.WriteLine("Thread started");
        ((ThreadHolder)state).Thread = Thread.CurrentThread;
        try
        {
            Thread.Sleep(Timeout.Infinite);
        }
        finally
        {
            Console.WriteLine("Thread ended");
        }
    }
}