Html Parser .NET component - C# / VB.NET Sample Codes

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DTG.Html;

namespace CreateHtmlDoc
{
    class Program
    {
        static string indent = "";

static void Main(string[] args)
        {
            string htmltext = "<div><b>Bold text</b> before <span style=\"font-style:italic;\">Italic text</span></div>";
            
            // Build DOM of the html 
            HtmlDoc html = HtmlDoc.ParseHTML(htmltext);

// The function changes text style from italic to underline
            ScanHtmlTree(html.Nodes);

// Show the tree of the html
            ViewHtmlDOM(html.Nodes);
            Console.ReadLine();
        }

static void ScanHtmlTree(HtmlNodeCollection nodes)
        {
            foreach (HtmlNode node in nodes)
            {
                if (node.IsElement)
                {
                    HtmlTag tag = node as HtmlTag;
                    if (tag.Attributes.IndexOf("style") != -1)
                        tag.Attributes["style"].Value = "text-decoration:underline;";

ScanHtmlTree(tag.Nodes);
                }
            }
        }

static void ViewHtmlDOM(HtmlNodeCollection nodes)
        {
            foreach (HtmlNode node in nodes)
            {
                if (node.IsText)
                {
                    HtmlText text = node as HtmlText;
                    Console.WriteLine(indent + text.ToString());
                }
                else
                {
                    HtmlTag tag = node as HtmlTag;
                    Console.WriteLine(indent + tag.ToString());

indent += "  ";
                    ViewHtmlDOM(tag.Nodes);

indent = indent.Substring(0, indent.Length - 2);
                    Console.WriteLine(indent + "</" + tag.Name + ">");
                }
            }
        }

}
}