FP Subforums

using System;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Threading.Tasks;

class Program
{
    static void Main()
    {
        ServicePointManager.DefaultConnectionLimit = 100;

        var stopwatch = new Stopwatch();
        stopwatch.Start();

        Console.Write("Username: ");
        string username = Console.ReadLine();
        Console.Write("Password: ");
        string password = Console.ReadLine();

        var client = new Client();
        client.Post("login.php?do=login",
    (
        "vb_login_username=" + username +
            "&vb_login_password_hint=Password" +
            "&vb_login_password=" + password +
            "&s=" +
            "&cookieuser=1" +
            "&securitytoken=guest" +
            "&do=login" +
            "&vb_login_md5password=" +
            "&vb_login_md5password_utf="
    ));

        string folder = Environment.GetFolderPath(
            Environment.SpecialFolder.Desktop) + @"\Session\";
        if (!Directory.Exists(folder)) Directory.CreateDirectory(folder);

        int[] subforums =
        {
            6, 15, 16, 36, 38, /*40,*/ 46, 51, 56, 60, 62, 64, 65, 66, 75, 76,
            107, 110, 189, 198, 240, 243, 262, 277, 315, 316, 339, 353, 361,
            383, 384, 385, 389, 391, 393, 394, 396, 397, 401, 403, 408, 409,
            411, 412, 414, 415
        };

        Parallel.ForEach(subforums, subforum =>
        {
            client.Get("forumdisplay.php?f=" + subforum);
            File.WriteAllText(folder + subforum + ".htm", client.Page);
        });

        stopwatch.Stop();

        Console.WriteLine("\nSubforums fetched in {0} seconds",
            (float)stopwatch.ElapsedMilliseconds / 1000);
        Console.Write("Press any key to continue . . . ");
        Console.ReadKey();
    }
}

class Client
{
    public HttpStatusCode Code { get; private set; }
    public string Page { get; private set; }
    private CookieContainer _Cookies = new CookieContainer();

    public void Get(string path = null)
        { Update(false, path, null); }

    public void Post(string path = null, string param = null)
        { Update(true, path, param); }

    private void Update(bool post, string path, string param)
    {
        var request = (HttpWebRequest)WebRequest.
            Create("http://www.facepunch.com/" + path);
        request.CookieContainer = _Cookies;
        request.Proxy = null;

        if (post)
        {
            request.ContentLength = param.Length;
            request.ContentType = "application/x-www-form-urlencoded";
            request.Method = "POST";

            using (var writer = new StreamWriter(request.GetRequestStream()))
                writer.Write(param);
        }

        using (var response = (HttpWebResponse)request.GetResponse())
        using (var reader = new StreamReader(response.GetResponseStream()))
        {
            Page = reader.ReadToEnd();
            Code = response.StatusCode;
        }
    }
}