抓取快递查询结果

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;
using System.Collections;
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        kdID.Value = "571106862182";
        ydid.Value = "1200126925911";
    }
    //根据Url地址得到网页的html源码
    private string GetWebContent(string Url)
    {
        string strResult = "";
        try
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
            //声明一个HttpWebRequest请求
            request.Timeout = 30000;
            //设置连接超时时间
            request.Headers.Set("Pragma", "no-cache");
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream streamReceive = response.GetResponseStream();
            Encoding encoding = Encoding.GetEncoding("GB2312");
            StreamReader streamReader = new StreamReader(streamReceive, encoding);
            strResult = streamReader.ReadToEnd();
        }
        catch
        {
            Response.Write("出错");
        }
        return strResult;
    }
    protected void Buttion1_Click(object sender, EventArgs e)
    {

      //抓取中通快递查询
        string strhtml = GetWebContent("http://www.kiees.cn/zto.asp?no=" + kdID.Value);
        string strReg1 = "\\f*\\n*\\r*\\t*\\v*";
        strhtml = Regex.Replace(strhtml, strReg1, "");
        string strReg = "查询结果(.*?)智腾达科技";
       foreach (Match m in Regex.Matches(strhtml, strReg, RegexOptions.IgnoreCase))
       {
           Label1.Text = m.Groups[1].Value;
       }
     
    }
    protected void Buttion2_Click(object sender, EventArgs e)
    {

       //抓取韵达快递查询
        string strhtml = GetWebContent("http://www.kiees.cn/yd.asp?no=" + ydid.Value);
        string strReg1 = "\\f*\\n*\\r*\\t*\\v*";//去掉回车换行等
        strhtml = Regex.Replace(strhtml, strReg1, "");
        string strReg = "如出现乱码(.*?)<table width=\"730\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"0\">";
        foreach (Match m in Regex.Matches(strhtml, strReg, RegexOptions.IgnoreCase))
        {
            Label1.Text = m.Groups[1].Value;
        }

    }
}