Steam User ID Path Finder Method

gistfile1.cs

        /// <summary>
        /// This gets a Dictionary of steam names and the user ID's needed to access, say, brink's settings.
        /// </summary>
        /// <returns>Dictionary<string,string>, Key is the steam display name, value is the userid path.</returns>
        public static Dictionary<string,string> GetSteamProfiles()
        {
            string steampath;
            try
            {
                steampath = (string) Registry.CurrentUser.OpenSubKey("Software\\Valve\\Steam").GetValue("SteamPath") + "//userdata";
            }
            catch(Exception e)
            {
                throw new FileNotFoundException("Unable to locate steam path via registry.", e);
            }

            if(!Directory.Exists(steampath))
                throw new FileNotFoundException("Unable to locate steam path via registry as found location does not exist.");

            Dictionary<string,string> LookupTable = new Dictionary<string, string>();

            try
            {
                foreach (string userdir in Directory.GetDirectories(steampath))
                {
                    if(!File.Exists(userdir + "//Config//localconfig.vdf"))
                        continue;
                    string quoted = string.Format("\"{0}\"",userdir.Substring(userdir.LastIndexOf('\\') + 1));
                    using (StreamReader reader = new StreamReader(userdir + "//Config//localconfig.vdf"))
                    {
                        try
                        {
                            while (!reader.ReadLine().Trim().EndsWith(quoted)) { }
                            reader.ReadLine();
                            string line = reader.ReadLine().Trim();
                            while (!line.EndsWith("}"))
                            {
                                if(line.StartsWith("\"Name\"",StringComparison.InvariantCultureIgnoreCase))
                                {
                                    line = line.Substring(6).Trim();
                                    line = line.Substring(1, line.Length - 2);
                                    LookupTable.Add(line, new DirectoryInfo(steampath + userdir.Substring(userdir.LastIndexOf('\\'))).FullName);
                                    reader.Close();
                                    break;
                                }
                                line = reader.ReadLine().Trim();
                            }
                        }
                        catch (NullReferenceException)
                        {}
                    }
                }
            }
            catch (Exception e)
            {
                throw new Exception("Unexpected error retrieving steam user data.",e);
            }

            return LookupTable;
        }