Development Class C#

using System;
using System.Text;
class EncoderTest
{
    public static void Main()
    {
        Char[] chars = new Char[] {'\u03a3'  // Sigma
        };
        Encoding encoding = Encoding.UTF7;
        Byte[] allCharactersFromEncoding = encoding.GetBytes(chars);
        Console.WriteLine("All characters encoded:");
        ShowArray(allCharactersFromEncoding);
        Encoder encoder = new UnicodeEncoding().GetEncoder();
        Byte[] firstchar = encoding.GetBytes(chars, 0, 1);
        Console.WriteLine("First character:");
        ShowArray(firstchar);
        Byte[] allCharactersFromEncoder = new Byte[encoder.GetByteCount(chars, 0, chars.Length, true)];
        encoder.GetBytes(chars, 0, chars.Length, allCharactersFromEncoder, 0, true);
        Console.WriteLine("All characters encoded:");
        ShowArray(allCharactersFromEncoder);
        bool bFlushState = false;
        Byte[] firstcharNoFlush = new Byte[encoder.GetByteCount(chars, 0, 1, bFlushState)];
        encoder.GetBytes(chars, 0, 1, firstcharNoFlush, 0, bFlushState);
        ShowArray(firstcharNoFlush);
    }
    public static void ShowArray(Array theArray)
    {
        foreach (Object o in theArray)
        {
            Console.Write("[{0}]", o);
        }
        Console.WriteLine("\n");
    }
}