using System;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        var txt = new string (System.IO.Path.GetInvalidFileNameChars());

        var counter1 = 0;

        foreach (var c in txt)

        {

            counter1 += 1;

            Console.Write(counter1 + ": ");

            Console.Write(c + " (" );

            Console.Write(Encoding.UTF8.GetBytes(c.ToString().ToCharArray())[0]);

            Console.WriteLine(")");

        //Console.Write(c.GetType().ToString());

        }

​

        // Get UTF-8 and UTF-16 encoders.

        Encoding utf8 = Encoding.UTF8;

        Encoding utf16 = Encoding.Unicode;

        // Display the original characters' code units.

        Console.WriteLine("Original UTF-16 code units:");

        byte[] utf16Bytes = utf16.GetBytes(txt);

        var counter = 0;

        foreach (var utf16Byte in utf16Bytes)

        {

            counter += 1;

            Console.Write(counter + ": ");

            Console.WriteLine("{0:X2} ", utf16Byte);

        }

​

        Console.WriteLine();

    }

}