Getting and using reddit_session Cookie

CookieWebClient.cs

using System;
using System.Net;

namespace Reddit
{
    internal class CookieWebClient : WebClient
    {
        public CookieWebClient()
            : base()
        {
            CookieContainer = new CookieContainer();
        }

        public CookieContainer CookieContainer { get; private set; }

        protected override WebRequest GetWebRequest(Uri address)
        {
            WebRequest request = base.GetWebRequest(address);
            if (request is HttpWebRequest)
            {
                (request as HttpWebRequest).CookieContainer = CookieContainer;
            }

            return request;
        }
    }
}

gistfile1.cs

//First login the user and get the reddit_session string
public static string GetRedditSessionForUser(string username, string password)
{
    string json, setCookie;
    try
    {
        // request & response for login
        var request = new WebClient();
        request.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        string postData = string.Format("user={0}&passwd={1}", username, password);
        byte[] dataUp = Encoding.ASCII.GetBytes(postData);
        byte[] dataDown = request.UploadData("http://www.reddit.com/api/login", "POST", dataUp);

        json = Encoding.ASCII.GetString(dataDown);
        setCookie = request.ResponseHeaders["Set-Cookie"];
    }
    catch (Exception e)
    {
        // some other error (ie. 502)
        throw new RedditDownException("Reddit seems to be down, again.", e);
    }

    // login successful
    var redditSession = setCookie.Split(new char[] { ';', ' ', '=' }, StringSplitOptions.RemoveEmptyEntries)[1];
    return redditSession;
}

//Then make the Cookie
var cookie = new Cookie("reddit_session", GetRedditSessionForUser(username, password));
cookie.Domain = "reddit.com";
cookie.Path = "/";

//Then you can make requests as a logged-in user
CookieWebClient request = new CookieWebClient();
request.CookieContainer.Add(Cookie);             
var json = request.DownloadString("http://www.reddit.com/user/" + Username + "/about.json");