using System;

using System.Xml;

using System.Linq;

using HtmlAgilityPack;

public class Program

{

    public static void Main()

    {

​

        var url = "https://fotogaleri.haberler.com/unlu-sarkici-imaj-degistirdi-gorenler-gozlerine/";

        var web = new HtmlWeb();

        var doc = web.Load(url);

​

        var htmlNodes = doc.DocumentNode.SelectNodes("//div[@class='col-big']//*/img");

        foreach (var node in htmlNodes)

        {

            Console.WriteLine(node.Attributes["src"].Value);

        }

    }

}