有趣的多線程編程（2）——線程中的參數傳遞

使用類、類的方法或類的屬性都可以向線程傳遞參數：
public class UrlDownloader{    string url;    public UrlDownloader (string url)    {        this.url = url;    }    public void Download()    {
        WebClient wc = new WebClient();
        Console.WriteLine("Downloading " + url);                                byte[] buffer = wc.DownloadData (url);        string download = Encoding.ASCII.GetString(buffer);        Console.WriteLine(download);        Console.WriteLine("Download successful.");
        //這裡你可以將download進行儲存等處理......    }}[... 在另一個類中使用它們...]              UrlDownloader downloader = new UrlDownloader (yourUrl);new Thread (new ThreadStart (downloader.Download)).Start();

注意參數是如何傳遞的。

在.NET 2.0中還可以這樣：

(CODE-BESIDE）
方式一：

ThreadStart starter = delegate { Download(yourUrl); });new Thread(starter).Start();
//使用線程池
WaitCallback callback = delegate (object state) { Download ((string)state); };ThreadPool.QueueUserWorkItem (callback, yourUrl);
方式二(使用ParameterizedThreadStart)：
Thread t = new Thread (new ParameterizedThreadStart(DownloadUrl));t.Start (myUrl);static void DownloadUrl(object url){    // ....
}