Cheese Finder

gistfile1.txt

using HtmlAgilityPack;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CheeseFinder
{
  class Program
	{
		static void Main(string[] args)
		{
			var urlsToTry = new Queue<string>();
			urlsToTry.Enqueue("http://en.wikipedia.org/wiki/Farmer");

			var web = new HtmlWeb();
			while (urlsToTry.Count > 0) {
				var url = urlsToTry.Dequeue();
				Console.WriteLine(url);
				try {
					var doc = web.Load(url);
					var match = doc.DocumentNode.SelectSingleNode("//*[contains(.,'cheese')]");
					if (match != null) {
						Process.Start(url);
						break;
					}
					var nodes = doc.DocumentNode.SelectNodes("//a[@href]");
					foreach (var node in nodes) {
						var newUrl = new Uri(new Uri(url), node.Attributes["href"].Value);
						if (newUrl.Scheme == Uri.UriSchemeHttp)
							urlsToTry.Enqueue(newUrl.AbsoluteUri);
					}
				} catch { }
			}
			Console.WriteLine("No dice.");
		}
	}
}