如何用WebBrowser控件获取下面的HtmlElement

本帖最后由 zhuzhu837_1 于 2012-08-13 17:45:37 编辑

解决方案 »

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;namespace SkinDemo
{
 public partial class Form7 : Form
 {
 string webContent = "<html>"
+ "<ul>"
+ "<li calss='a1'><a>a1</a></li>"
+ "<li calss='a2'><a>a2</a></li>"
+ "<li calss='a3'><a>a3</a></li>"
+ "<li calss='a4'><a>a4</a></li>"
+ "<li calss='a5'><a>a5</a></li>"
+ "</ul>"
+ "</html>"; public Form7()
 {
 InitializeComponent(); webBrowser1.DocumentText = webContent;
 } private void button1_Click(object sender, EventArgs e)
 {
 string content = webBrowser1.DocumentText;
 string reg = "<li calss='a3'><a>(.+?)</a></li>";
 Regex regex = new Regex(reg);
 Match match = regex.Match(content);
 MessageBox.Show(match.Groups[1].Value);
 }
 }
}
楼上的是获取了字符串，那怎么把获取的字符串转为HtmlElement呢？
WebBrowser web = (WebBrowser)sender;                     HTMLDocument doc1 = (HTMLDocument)web.Document.DomDocument;
            IHTMLElementCollection ElementCollection = doc1.getElementsByTagName("Table");
            foreach (IHTMLElement item in ElementCollection)
            {
                string strText = item.innerText.ToString();
}这个是之前我做的一个，跟你要求应该差不多，你自己按照这个修改一下应该就可以了
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;namespace SkinDemo
{
 public partial class Form7 : Form
 {
 string webContent = "<html>"
+ "<ul>"
+ "<li calss='a1' id='a1'><a>a1</a></li>"
+ "<li calss='a2' id='a2'><a>a2</a></li>"
+ "<li calss='a3' id='a3'><a>a3</a></li>"
+ "<li calss='a4' id='a4'><a>a4</a></li>"
+ "<li calss='a5' id='a5'><a>a5</a></li>"
+ "</ul>"
+ "</html>"; public Form7()
 {
 InitializeComponent(); webBrowser1.DocumentText = webContent;
 } private void button1_Click(object sender, EventArgs e)
 {
 HtmlElementCollection colleciton = webBrowser1.Document.GetElementsByTagName("ul");
 foreach (HtmlElement ele in colleciton[0].Children)
 {
 if (ele.GetAttribute("id") == "a3")
 {
 string v = ele.Children[0].Children[0].InnerText;//A标签中span的值
 HtmlElement e = ele.Children[0];//就是你所需要的A标签
 }
 } }
 }
}将li标签上面添加一个id
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
 HtmlElementCollection li = webBrowser1.Document.GetElementsByTagName("li");
 for (int i = 0; i < li.Count;i++ )
 {
 if (li[i].GetAttribute("calss") == "a3")
 {
 HtmlElement link = li[i].FirstChild;
 MessageBox.Show(link.InnerHtml);
 }
 }
}