C # WebBrowser Development Guide

The entire quoted unit mshtml;

Path: C:\windows\assembly\GAC\Microsoft.mshtml\7.0.3300.0__b03f5f7f11d50a3a\Microsoft.mshtml.dll//Different version paths are different

First, how to use WebBrowser to get all the source code of the Web page

1. No frame included

String s= WB1. DocumentText;

2. Contains the framework

IHTMLDocument2 doc=wb1. Document.domdocument as IHTMLDocument2;
IHTMLFramesCollection2 Frames=doc.frames as IHTMLFramesCollection2;
int i_frame=0; 1th Frame
IHTMLWindow2 Frame=frames.item (ref i_frame) as IHTMLWindow2;
IHTMLDocument2 doc2=frame.document as IHTMLDocument2;
IHTMLDocument3 doc3=frame.document as IHTMLDocument3;

strings = Doc2.body.innerHTML;

Second, WebBrowser how to get the elements of the Web page

1. Based on element ID

HtmlElement ele= WB1. document.getElementById ("ID");

2. Depending on the element name

HtmlElement ele= WB1. document.all["Name"];

3. No ID, no name element

3.1 WebBrowser traverse the page elements:

HTMLDocument doc=wb1. Document;

HtmlElementCollection Elements=doc. All;

foreach (htmlelement element in elements)

{

if (element. GetAttribute ("innerText") = = "Submit Answer")//element's Innnertext attribute is "submit Answer"

{

Element.  InvokeMember ("click"); Analog click

Break

}

}

3.2 WebBrowser based on the tag traversal of the element (input, a,img,span,li,div,etc.)

Input: All types that can be entered, such as text box, tick box, check box, drop-down list, picture, etc.

A:A tags, can be linked with hyperlinks

IMG: Picture Type

Span:span type

Li: Drop-down list, list box, etc.

Div:div

HtmlElementCollection eles = WB1. document.getElementsByTagName ("a") as htmlelementcollection;
foreach (HtmlElement ele in Eles)
{
if (ele. GetAttribute ("href")! = null)
if (ele. GetAttribute ("href") = = "Hyperlink to a label")
{
element.  InvokeMember ("click"); Analog Click
Break
}
}

3.3 Index number according to the element

HtmlElement ele= WB1.  DOCUMENT.ALL[0]; A 1th element

HtmlElement ele= WB1.  document.getElementsByTagName ("input") [0]; Element of the first inuput type

3.4 Getting unknown elements based on known elements

C # WebBrowser Development Guide