using System;

using HtmlAgilityPack;

​

public class Program

{

    public static void Main()

    {

        // calling method

        ExtractHref("https://www.keysight.com/en/pdx-3051333-pn-UXR0051AP/infiniium-uxr-series-oscilloscope-5-ghz-1-channels-1mm-inputs?pm=spt&nid=-31885.1286994&cc=CA&lc=eng");

        Console.WriteLine("------------------Writing out links in child page");

        ExtractHref("https://www.keysight.com/main/techSupport.jspx?nid=-31885.1286994&pid=3051333&cc=CA&lc=eng&pageMode=DS");

    }

​

    static void ExtractHref(string URL)

    {

        // declaring & loading dom

        HtmlWeb web = new HtmlWeb();

        HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();

        doc = web.Load(URL);

        // extracting all links

        foreach (HtmlNode link in doc.DocumentNode.SelectNodes("//a[@href]"))

        {

            HtmlAttribute att = link.Attributes["href"];

            if (att.Value.Contains("a"))

            {

                // showing output

                Console.WriteLine(att.Value);

            }

        }

    }

}