[转]数据下载（三）

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;

namespace prjDownLoad
{
    class Program
    {
        static void Main(string[] args)
        {
            //Version3.0
            //使用WebClient来下载
            WebClient wc = new WebClient();
            //注册当数据下载完成以后触发的事件
            wc.DownloadDataCompleted += new DownloadDataCompletedEventHandler(wc_DownloadDataCompleted);
            //注册文件在下载过程中触发的事件
            wc.DownloadProgressChanged += new DownloadProgressChangedEventHandler(wc_DownloadProgressChanged);
            //开始异步下载数据
            wc.DownloadDataAsync(new Uri("http://blog.sina.com.cn/dalishuishou"));
            Console.ReadLine();
        }

        static void wc_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e)
        {
            //打印下载的字节数
            Console.WriteLine(string.Format("已经下载了{0}字节", e.BytesReceived));
            //打印下载的百分比
            Console.WriteLine(string.Format("已经完成的百分比：{0}%", e.ProgressPercentage));
        }

        static void wc_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e)
        {
            FileStream fs = new FileStream("c:\\cc.txt", FileMode.Create, FileAccess.Write);
            fs.Write(e.Result,0,e.Result.Length);
            fs.Flush();
            fs.Close();
            Console.WriteLine("下载完成");
        }
    }
}

转摘自:http://blog.sina.com.cn/s/blog_49458c270100gpyz.html