WebBrowser page operation extract get elements and tags (full article)

Recently using Webbrower to do a few hook applet, the collection accumulates as follows:

Using System;

Using System.Collections.Generic;

Using System.Linq;

Using System.Text;

Using system.windows.forms;//

Namespace WebBrowser Web operation

{

public class Element

{

Get elements by name

Public HtmlElement getelement_name (WebBrowser wb,string Name)

{

HtmlElement e = wb. Document.all[name];

return e;

}

Get elements by ID

Public HtmlElement getelement_id (WebBrowser wb, String Id)

{

HtmlElement e = wb. document.getElementById (ID);

return e;

}

Get elements based on index

Public HtmlElement getelement_index (WebBrowser wb,int Index)

{

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

return e;

}

  //Get elements based on Type, use    public htmlelement getelement_type without name and ID (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;    }//Gets the element according to type, is used without name and ID, and specifies the first of the homogeneous type, Getelement_type () upgrade version  &NBSp; 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;    }

Get form table sole name name, return form

Public HtmlElement getelement_form (WebBrowser wb,string form_name)

{

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

return e;

}

Set the value of the element Value property

public void Write_value (HtmlElement e,string value)

{

E.setattribute ("value", value);

}

Methods of executing elements, such as: Click,submit (requires form table sole name), etc.

public void Btn_click (HtmlElement e,string s)

{

E.invokemember (s);

}

}

}

This is the form code that calls this class:

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 Web operation

{

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");//method with the button click

}

private void Button4_Click (object sender, EventArgs e)

{

El. Btn_click (el. Getelement_form (WebBrowser1, "Form1"), "submit");//Get the form first, then call the form's Submit method

}

}

}

WebBrowser page operation extract get elements and tags (full article)