ThreadPool Demo : ThreadPool « Thread « C# / CSharp Tutorial

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

using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;

  public class Printer
  {
    private object lockToken = new object();

    public void PrintNumbers()
    {
      lock (lockToken)
      {
        Console.WriteLine("-> {0} is executing PrintNumbers()",Thread.CurrentThread.Name);
        for (int i = 0; i < 10; i++)
        {
          Console.Write("{0}, ", i);
          Thread.Sleep(1000);
        }
      }
    }
  }

  class Program
  {
    static void Main(string[] args)
    {
      Console.WriteLine("Main thread started. ThreadID = {0}",Thread.CurrentThread.ManagedThreadId); 
      Printer p = new Printer();
      WaitCallback workItem = new WaitCallback(PrintTheNumbers);
      for (int i = 0; i < 10; i++)
      {
        ThreadPool.QueueUserWorkItem(workItem, p);
      }
      Console.ReadLine();
    }
    static void PrintTheNumbers(object state)
    {
      Printer task = (Printer)state;
      task.PrintNumbers();
    }
  }