using System;

using System.IO;

using System.Text;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var base64 = new ExternalToken("1234-5678-9012", DateTime.UtcNow.AddDays(-1)).Hash();

        //var bytes = Convert.FromBase64String(base64);

        //var json = Encoding.UTF8.GetString(bytes);

        //Console.WriteLine(string.Format("Json: {0}", json));

        //ExternalToken converted;

        //converted = JsonConvert.DeserializeObject<ExternalToken>(json);       

        //Console.WriteLine(string.Format("Converted: {0}", converted));

    }

    [Serializable]

    public class ExternalToken

    {

        private readonly string _token;

        private readonly DateTime _dateCreated;

​

        public ExternalToken(string token, DateTime dateCreated)

        {

            if (string.IsNullOrWhiteSpace(token))

                throw new ArgumentException("Value cannot be null or whitespace.");

​

            _token = token;

            _dateCreated = dateCreated;

        }

​

        public string Hash()

        {

            try

            {

                Console.WriteLine("This obj: {0}", this);

                var json = JsonConvert.SerializeObject(this);

                Console.WriteLine("Serialised: {0}", json);

                return "test"; //Convert.ToBase64String(Encoding.UTF8.GetBytes(json));

            }

            catch (Exception e)

            {

                Console.WriteLine(e);

                return "SerialisationError";

            }

        }

​

        public override string ToString()

        {

            return string.Format("Token: {0}, DateCreated: {1}", _token, _dateCreated);

        }

    }

}