.NET获取网页源代码

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Net;
using System.Text;

public partial class Thief : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
       string url = "http://www.myspace.cn/";       //要获取的网页地址
       WebRequest req = WebRequest.Create(url);
       WebResponse res = req.GetResponse();
       Stream resStream = res.GetResponseStream();
       StreamReader sr = new StreamReader(resStream, Encoding.UTF8);
       string contentHTML = sr.ReadToEnd();    //读取网页的源代码   
       Response.Write(contentHTML);
       resStream.Close();
       sr.Close();
    }
}