Yahoo! search interface

Yahoo! search interface
You are encouraged to solve this task according to the task description, using any language you may know.

Create a class for searching Yahoo results. It must implement a Next Page method, and read URL, Title and Content from results. Instance lenght should return number of results.

C#

This example is incorrect. Please fix the code and remove this message. Details: This examples is currently not working because Google TOS. It will be converted into Yahoo! later.

<lang csharp>using System; using System.Net; using System.Text; using System.Text.RegularExpressions; using System.Collections; using System.Collections.Generic; using System.Linq;

class YahooSearch {

   private string query;
   private string content;
   private int page = 1;

   public YahooSearch(string query) {
       this.query = query;
       this.content = new WebClient().DownloadString("http://search.yahoo.com/search?p=" + query);
   }

   public YahooSearch(string query, int page) {
       this.query = query;
       this.page = page;
       this.content = new WebClient().DownloadString(String.Format("http://search.yahoo.com/search?p={0}&b={1}", query, ((this.page - 1) * 10) + 1));
   }    

   public long Length {
       get {            
           return long.Parse(new Regex(".+? of (.+?) for").
               Match(this.content).Groups[1].Value.Replace(",", ""));
       }
   }

   public YahooResult[] Results {
       get {
           ArrayList results = new ArrayList();

foreach (Match e in new Regex("<a class=\"yschttl spt\" href=\".+?\" >(.+?)</a>

(.+?)

(.+?)").Matches(this.content)) {

               string rurl = e.Groups[3].Value.
                   Replace("", "").Replace("", "").Replace("", "").
                   Replace("","");
               string rtitle = e.Groups[1].Value.
                   Replace("", "").Replace("", "").Replace("","");
               string rcontent = e.Groups[2].Value.
                   Replace("", "").Replace("", "").Replace("...", "").
                   Replace("","");

               Console.WriteLine(rurl);
               results.Add(new YahooResult(rurl, rtitle, rcontent));
           }
           return (YahooResult[])results.ToArray(typeof(YahooResult));
       }
   }

   public YahooSearch NextPage() {
       return new YahooSearch(this.query, this.page + 1);
   }

   public YahooSearch GetPage(int page) {
       return new YahooSearch(this.query, page);
   }

}

class YahooResult {

   public string URL { get; set; }
   public string Title { get; set; }
   public string Content { get; set; }

   public YahooResult(string url, string title, string content) {
       this.URL = url;
       this.Title = title;
       this.Content = content;
   }

}

//Usage:

class Prog {

   static void Main() {
       YahooSearch x = new YahooSearch("test");
       Console.WriteLine(x.Results[0].Title); //Return first result title.
   }

}</lang>