HttpWebRequest类与WebRequest类的使用

1、System.Net.HttpWebRequest 类


如下代码以Post方式发送数据：
using System.IO;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;

private void btnConfirm_Click(object sender, System.EventArgs e)
  {
   string UserName = txtUserName.Text;
   string SpotID = txtSpotID.Text;
   string BBS = txtBBS.Text;
   string Board = txtBoard.Text;
   string Title = txtTitle.Text;
   string Content = txtContent.Text;
   Content = NoHTML(Content);//去除HTML标记
   string UserIp = Request.ServerVariables["REMOTE_HOST"].ToString();   
   string PostUrl = "";
   string PostDateTime = DateTime.Now.ToString();
   
   string WebSite = "";//服务器接收页面
   WebSite = System.Configuration.ConfigurationSettings.AppSettings["PostUrl"];

   string strQuery = "UserName="+ UserName +"&SpotID="+ SpotID +"&BBS="+ BBS +"&Board="+ Board +
    "&Title="+ Title +"&Content="+ Content +"&UserIp="+ UserIp +"&PostUrl="+ PostUrl +"&PostDateTime="+ PostDateTime;//数据参数队列 
  Encoding encoding = Encoding.UTF8;
   byte[] data = encoding.GetBytes(strQuery);
   
   // 准备请求...
   HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(WebSite);
   myRequest.Method = "POST";
   myRequest.ContentType="application/x-www-form-urlencoded";
   myRequest.ContentLength = data.Length;
   Stream newStream=myRequest.GetRequestStream();
   // 发送数据
   newStream.Write(data,0,data.Length);
   newStream.Close();
   
   Page.RegisterStartupScript("script",GetShowAlert("发表成功！","window.location.href('ClientPostNote.aspx');")); 
   }

   ///

  /// 去除HTML标记
  ///

  /// 包括HTML的源码
  /// 已经去除后的文字
  public string NoHTML(string Htmlstring)
  {
   //删除脚本
   Htmlstring = Htmlstring.Replace("\r\n","");
   Htmlstring = Regex.Replace(Htmlstring,@"","",RegexOptions.IgnoreCase);
   Htmlstring = Regex.Replace(Htmlstring,@"","",RegexOptions.IgnoreCase);
   Htmlstring = Regex.Replace(Htmlstring,@"<.*?>","",RegexOptions.IgnoreCase);
   //删除HTML
   Htmlstring = Regex.Replace(Htmlstring,@"<(.[^>]*)>","",RegexOptions.IgnoreCase);
   Htmlstring = Regex.Replace(Htmlstring,@"([\r\n])[\s]+","",RegexOptions.IgnoreCase);
   Htmlstring = Regex.Replace(Htmlstring,@"-->","",RegexOptions.IgnoreCase);
   Htmlstring = Regex.Replace(Htmlstring,@"

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