// @nuget: HtmlAgilityPack

​

using System;

using HtmlAgilityPack;

public class Program

{

    public static void Main()

    {

        var html = @"http://www.cpu-world.com/index.html";

​

        HtmlWeb web = new HtmlWeb();

​

        var htmlDoc = web.Load(html);

​

        var node = htmlDoc.DocumentNode.SelectSingleNode("//h1");

​

        Console.WriteLine(node.InnerText);      

    }

}