Download web contents asynchronously using Thread class.

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;

namespace Ex01_Console
{
    class ThreadDemo
    {
        public static void Download(string[] urls)
        {
            List<Thread> threads = new List<Thread>();

            foreach (string url in urls)
            {
                Thread t = new Thread(Download);
                threads.Add(t);
                t.Start(url);
            }

            // 確保剛才建立的那些執行緒都執行完了之後才返回 Main() 函式.
            threads.ForEach(t => t.Join());
        }

        public static void Download(object url)
        {
            using (var client = new System.Net.Http.HttpClient())
            {
                Task<string> task = client.GetStringAsync(url.ToString());
                string text = task.Result;
                Console.WriteLine("Downloaded {0} chars from {1} on thread {2}",
                    text.Length, url, Thread.CurrentThread.ManagedThreadId);
            }
        }
    }
}