using System;

using System.Web;

​

public class Program

{

    public static void Main()

    {

        string input = "Luispolanco|1aA3650LPlp";

         var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(input);

        string Token64 =    System.Convert.ToBase64String(plainTextBytes);

        string Token= HttpUtility.UrlEncode(Token64);

        string t=decode(Token);

        Console.WriteLine(input);   

        Console.WriteLine(Token64);

        Console.WriteLine(Token);

        Console.WriteLine(decode(Token));

        Token=decode(Token);

        char[] charSeparators = new char[] {'|'};

        string[] s=Token.Split(charSeparators,System.StringSplitOptions.None);

        Console.WriteLine (s[0]);

        Console.WriteLine (s[1]);

    }

    public static string decode(string token)

    {

        string Token= HttpUtility.UrlDecode(token);

    var base64EncodedBytes = System.Convert.FromBase64String(Token);

  return System.Text.Encoding.UTF8.GetString(base64EncodedBytes);

    }

}