Registering wait callbacks for events : ThreadPool « Thread « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Thread
3. ThreadPool

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime;
using System.Runtime.CompilerServices;
using System.Security;
using System.Text;

public class MainClass
{
    public static void Main()
    {
        using (EventWaitHandle ewh = new ManualResetEvent(false))
        using (EventWaitHandle callbackDoneEvent = new ManualResetEvent(false))
        {
            ThreadPool.RegisterWaitForSingleObject(ewh,
                delegate {
                    Console.WriteLine("Callback fired: {0}", Thread.CurrentThread.ManagedThreadId);
                    callbackDoneEvent.Set();
                }, null, Timeout.Infinite, true);

            Console.WriteLine("Setting the event: {0}", Thread.CurrentThread.ManagedThreadId);
            ewh.Set();

            callbackDoneEvent.WaitOne();
        }
    }
}

Setting the event: 1
Callback fired: 4