获取html内标题,通过html敏捷包获取标题标签

我正在尝试使用htmlagility pack来获得结果的链接和结果

我有这个代码

using HtmlAgilityPack;

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.IO;

using System.Linq;

using System.Net;

using System.ServiceModel.Syndication;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using System.Xml;

namespace Search

{

public partial class Form1 : Form

{

// load snippet

HtmlAgilityPack.HtmlDocument htmlSnippet = new HtmlAgilityPack.HtmlDocument();

public Form1()

{

InitializeComponent();

}

private void btn1_Click(object sender, EventArgs e)

{

listBox1.Items.Clear();

StringBuilder sb = new StringBuilder();

byte[] ResultsBuffer = new byte[8192];

string SearchResults = "http://google.com/search?q=" + txtKeyWords.Text.Trim();

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(SearchResults);

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

Stream resStream = response.GetResponseStream();

string tempString = null;

int count = 0;

do

{

count = resStream.Read(ResultsBuffer, 0, ResultsBuffer.Length);

if (count != 0)

{

tempString = Encoding.ASCII.GetString(ResultsBuffer, 0, count);

sb.Append(tempString);

}

}

while (count > 0);

string sbb = sb.ToString();

HtmlAgilityPack.HtmlDocument html = new HtmlAgilityPack.HtmlDocument();

html.OptionOutputAsXml = true;

html.LoadHtml(sbb);

HtmlNode doc = html.DocumentNode;

foreach (HtmlNode link in doc.SelectNodes("//a[@href]"))

{

//HtmlAttribute att = link.Attributes["href"];

string hrefValue = link.GetAttributeValue("href", string.Empty);

if (!hrefValue.ToString().ToUpper().Contains("GOOGLE") && hrefValue.ToString().Contains("/url?q=") && hrefValue.ToString().ToUpper().Contains("HTTP://"))

{

int index = hrefValue.IndexOf("&");

if (index > 0)

{

hrefValue = hrefValue.Substring(0, index);

listBox1.Items.Add(hrefValue.Replace("/url?q=", ""));

}

}

}

}

}

}

此代码返回查询的结果链接我想获得每个链接的标题标签我如何获得每个链接的标题？

任何人都可以帮忙吗？