// @nuget: HtmlAgilityPack

​

using System;

using System.Xml;

using HtmlAgilityPack;

public class Program

{

    public static void Main()

    {

             var html = @"https://etp.neftregion.ru/auctions";

​

            var web = new HtmlWeb();

​

            var htmlDoc = web.Load(html);

​

            var node1 = htmlDoc.DocumentNode.SelectNodes("//table/tr/following-sibling::*[td[.='прием заявок']]/following-sibling::*/td/a[@class='linkau more']");

​

            foreach (var node11 in node1) {

                Console.Write("http://etp.neftregion.ru");

                Console.WriteLine(node11.Attributes["href"].Value);

            }

​

    }

}

​