using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        System.Text.Encoding iso_8859_1 = System.Text.Encoding.GetEncoding("iso-8859-1");

        System.Text.Encoding utf_8 = System.Text.Encoding.UTF8;

        // Unicode string.

        string s_unicode = "abc€abc";

        // Convert to ISO-8859-1 bytes.

        byte[] isoBytes = iso_8859_1.GetBytes(s_unicode);

        // Convert to UTF-8.

        byte[] utf8FromIsoBytes = System.Text.Encoding.Convert(iso_8859_1, utf_8, isoBytes);

        byte[] utf8Bytes = utf_8.GetBytes(s_unicode);

​

        var result = utf8Bytes.SequenceEqual(utf8FromIsoBytes);

        Console.WriteLine("result = " + result);

    }

}