using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        var original = "Olá, Hello World";

        Console.WriteLine("Original: " + original);

        var ascBytes = Encoding.ASCII.GetBytes(original);

        var backFromASCII = Encoding.ASCII.GetString(ascBytes);

        Console.WriteLine("ASCII: " + backFromASCII);

        var utfBytes = Encoding.UTF8.GetBytes(original);

        var backFromUTF8 = Encoding.UTF8.GetString(utfBytes);

        Console.WriteLine("UTF8: " + backFromUTF8);

        var iso8859 = Encoding.GetEncoding("ISO-8859-1");

        var isoBytes = iso8859.GetBytes(original);

        var backFromISO = iso8859.GetString(isoBytes);

        Console.WriteLine("ISO-8859: " + backFromISO);

    }

}