WebBrowser网页操作之提取获取元素和标签（完整篇）

最近使用WebBrower做了几个Hook小程序，收集积累如下：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows.Forms;//

namespace WebBrowser网页操作

{

public class Element

{

//根据Name获取元素

public HtmlElement GetElement_Name(WebBrowser wb,string Name)

{

HtmlElement e = wb.Document.All[Name];

return e;

}

//根据Id获取元素

public HtmlElement GetElement_Id(WebBrowser wb, string id)

{

HtmlElement e = wb.Document.GetElementById(id);

return e;

}

//根据Index获取元素

public HtmlElement GetElement_Index(WebBrowser wb,int index)

{

HtmlElement e = wb.Document.All[index];

return e;

}

//根据Type获取元素，在没有NAME和ID的情况下使用    public HtmlElement GetElement_Type(WebBrowser wb,string type)     {         HtmlElement e=null;         HtmlElementCollection elements = wb.Document.GetElementsByTagName("input");         foreach (HtmlElement element in elements)         {             if (element.GetAttribute("type") == type)             {                 e = element;             }         }         return e;     }//根据Type获取元素，在没有NAME和ID的情况下使用,并指定是同类type的第几个，GetElement_Type（）升级版    public HtmlElement GetElement_Type_No(WebBrowser wb,string type,int i )     {        int j=1;         HtmlElement e=null;         HtmlElementCollection elements = wb.Document.GetElementsByTagName("input");         foreach (HtmlElement element in elements)         {             if (element.GetAttribute("type") == type)             {                 if(j==i)                 {                   e = element;                 }                 j++;             }         }         return e;     }

//获取form表单名name,返回表单

public HtmlElement GetElement_Form(WebBrowser wb,string form_name)

{

HtmlElement e = wb.Document.Forms[form_name];

return e;

}

//设置元素value属性的值

public void Write_value(HtmlElement e,string value)

{

e.SetAttribute("value", value);

}

//执行元素的方法，如：click，submit(需Form表单名)等

public void Btn_click(HtmlElement e,string s)

{

e.InvokeMember(s);

}

}

}

这是调用这个类的窗体代码：

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WebBrowser网页操作

{

public partial class Form1 : Form

{

Element el = new Element();

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

webBrowser1.Navigate(Application.StartupPath + @"\Test.html");

}

private void button1_Click(object sender, EventArgs e)

{

el.Write_value(el.GetElement_Name(webBrowser1,"username"),"isaced");

}

private void button2_Click(object sender, EventArgs e)

{

el.Write_value(el.GetElement_Id(webBrowser1, "password"), "123456");

}

private void button3_Click(object sender, EventArgs e)

{

el.Btn_click(el.GetElement_Id(webBrowser1,"button"),"click");//方法用的按钮click

}

private void button4_Click(object sender, EventArgs e)

{

el.Btn_click(el.GetElement_Form(webBrowser1, "form1"), "submit");//先获取表单，再调用表单的submit方法

}

}

}