using System;  using System.Collections;  using System.ComponentModel;  using System.Data;  using System.Drawing;  using System.Web;  using System.Web.SessionState;  using System.Web.UI;  using System.Web.UI.WebControls;  using System.Web.UI.HtmlControls;  using System.IO;  using System.Net;  using System.Text;  using System.Text.RegularExpressions;  namespace eMeng.Exam  {  ///  <summary>  /// GetPageHtml 的摘要说明。  ///  </summary>  public class GetPageHtml : System.Web.UI.Page  {  protected System.Web.UI.WebControls.Button WebClientButton;  protected System.Web.UI.WebControls.Button WebRequestButton;  protected System.Web.UI.WebControls.TextBox ContentHtml;  protected System.Web.UI.WebControls.TextBox UrlText;  protected System.Web.UI.WebControls.Button GetText;  private string PageUrl = "";  private void Page_Load(object sender, System.EventArgs e)   {}  #region Web Form Designer generated code  override protected void OnInit(EventArgs e)   {   InitializeComponent();   base.OnInit(e);  }  ///  <summary>  /// 设计器支持所需的方法 - 不要使用代码编辑器修改  /// 此方法的内容。  ///  </summary>  private void InitializeComponent()  {          this.WebClientButton.Click += new System.EventHandler(this.WebClientButton_Click);      this.WebRequestButton.Click += new System.EventHandler(this.WebRequestButton_Click);      this.GetText.Click += new System.EventHandler(this.GetText_Click);      this.Load += new System.EventHandler(this.Page_Load);  }  #endregion  private void WebClientButton_Click(object sender, System.EventArgs e)  {   PageUrl = UrlText.Text;   WebClient wc = new WebClient();   wc.Credentials = CredentialCache.DefaultCredentials;   ///方法一：   Byte[] pageData = wc.DownloadData(PageUrl);   ContentHtml.Text = Encoding.Default.GetString(pageData);         /// 方法二：   /// ***************代码开始**********   /// Stream resStream = wc.OpenRead(PageUrl);   /// StreamReader sr = new StreamReader(resStream,System.Text.Encoding.Default);   /// ContentHtml.Text = sr.ReadToEnd();   /// resStream.Close();   /// **************代码结束********   ///   wc.Dispose();    }  private void WebRequestButton_Click(object sender, System.EventArgs e)  {   PageUrl = UrlText.Text;   WebRequest  request = WebRequest.Create(PageUrl);   WebResponse response = request.GetResponse();   Stream resStream = response.GetResponseStream();       StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default);   ContentHtml.Text = sr.ReadToEnd();   resStream.Close();    sr.Close();  }  private void GetText_Click(object sender, System.EventArgs e)   {      PageUrl = UrlText.Text;      WebRequest  request = WebRequest.Create(PageUrl);      WebResponse response = request.GetResponse();      Stream resStream = response.GetResponseStream();          StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default);      ContentHtml.Text = sr.ReadToEnd();      resStream.Close();       sr.Close();      ContentHtml.Text = Regex.Replace(ContentHtml.Text," <[^>]*>", "");      //替换空格      ContentHtml.Text = Regex.Replace(ContentHtml.Text,"\s+", " ");   }  }

private void toolStripButton1_Click(object sender, EventArgs e)         {             string path = @"http://www.abc.com/0211155400.xml";             HttpWebRequest req = (HttpWebRequest)WebRequest.Create(path);             req.Timeout = 10000;             HttpWebResponse rep = (HttpWebResponse)req.GetResponse();             using (StreamReader myFile = new StreamReader(rep.GetResponseStream()))             {                 string myString = myFile.ReadToEnd();             }         }