using System;

using  System.Xml.XPath;

using System.Net;

using HtmlAgilityPack;

using CsQuery;

public class Program

{

    public static void Main()

    {

        string csspath = "#rg_s > div:nth-child(1) > a > img";

​

        var html = DownloadString("https://www.google.com.tw/search?q=sony+logo&safe=off&biw=1280&bih=598&tbm=isch&tbo=u&source=univ&sa=X&ved=0CBsQsARqFQoTCLur06qGzscCFYQtpgoduMEB0A");

         CQ dom = html;

         dom.Select(csspath);

        //Console.WriteLine (dom.Text());

    }

    public static string DownloadString (string address)

    {

        WebClient client = new WebClient ();

        string reply = client.DownloadString (address);

​

        Console.WriteLine (reply);

        return reply;

    }

}