Htmlagilitypack Official document (i) "Parser"

The HTML parser allows you to parse HTML and return a HTMLDocument. Html Parser

Name	Description
From File	Loads an HTML document from a file.
From String	Loads the HTML document from the specified string.
From Web	Gets an HTML document from Internet resource.
From Browser	Gets an HTML document from a WebBrowser.

loading HTML from a file

Htmldocument.load method to load an HTML document from a file

The following example loads HTML from a file

var path = @ "test.html";

var doc = new HTMLDocument ();
Doc. Load (path);

var node = doc. Documentnode.selectsinglenode ("//body");

Console.WriteLine (node. outerHTML);  

loading HTML from a string

The Htmldocument.loadhtml method loads the HTML document from the specified string.

The following example loads HTML from a specified string.

var html = @ "<! DOCTYPE html>
 
load HTML from the Web 
The Htmlweb.load method gets an HTML document from an Internet resource.

The following example loads HTML from the Web

var html = @ "http://html-agility-pack.net/";

Htmlweb Web = new Htmlweb ();

var htmldoc = web. Load (HTML);

var node = htmlDoc.DocumentNode.SelectSingleNode ("//head/title");

Console.WriteLine ("Node Name:" + node.) Name + "\ n" + node. outerHTML);
 
loading HTML from WebBrowser 
The Htmlweb.load method obtains an HTML document from a Web browser. You can wait for JavaScript to run by customizing the isbrowserscriptcompleted parameter.

The following example loads HTML from WebBrowser and waits until the text is set to Div.

string url = "Http://html-agility-pack/from-browser";
var web1 = new Htmlweb (); var Doc1 = Web1.

    Loadfrombrowser (URL, o => {var webBrowser = (webBrowser) o; Wait until the dynamic text is set to return!string. IsNullOrEmpty (WebBrowser.Document.GetElementById ("Uidynamictext").
InnerText);
}); var T1 = Doc1. Documentnode.selectsinglenode ("//div[@id = ' uidynamictext ']").

InnerText;
var web2 = new Htmlweb (); var doc2 = web2. Loadfrombrowser (URL, HTML => {//wait until dynamic text is set to return!html.
Contains ("<div id=\" uidynamictext\ "></div>");
}); var t2 = doc2. Documentnode.selectsinglenode ("//div[@id = ' uidynamictext ']").

InnerText;
Console.WriteLine ("Text 1:" + T1); Console.WriteLine ("Text 2:" + T2);