using System;

​

using System.Security.Cryptography;

using System.Text;              

public class Program

{

    public static void Main()

    {

        Decoder utf8Decoder = Encoding.UTF8.GetDecoder();

​

        // These bytes in UTF-8 correspond to 3 different Unicode

        // characters: space (U+0020), # (U+0023), and the biohazard

        // symbol (U+2623).  Note the biohazard symbol requires 3 bytes

        // in UTF-8 (hexadecimal e2, 98, a3).  Decoders store state across

        // multiple calls to GetChars, handling the case when one char

        // is in multiple byte arrays.

        byte[] bytes1 = { 0x20, 0x23, 0xe2 };

        byte[] bytes2 = { 0x98, 0xa3 };

        char[] chars = new char[3];

​

        int charLen = utf8Decoder.GetChars(bytes1, 0, bytes1.Length, chars, 0);

        // The value of charLen should be 2 now.

        charLen += utf8Decoder.GetChars(bytes2, 0, bytes2.Length, chars, charLen);

        foreach(char c in chars) { Console.WriteLine("[{0}] = U+{1:X4}", c, (ushort)c); }

        //Convert a sequence of bytes into a sequence of characters

        Byte[] bytes3 = new Byte[] { 99, 204, 128, 234, 130, 160 };

        int charCount = utf8Decoder.GetCharCount(bytes3, 0, bytes3.Length);

        chars = new Char[charCount];

        int charsDecodedCount = utf8Decoder.GetChars(bytes3, 0, bytes3.Length, chars, 0);

        Console.WriteLine("{0} characters used to decode bytes.", charsDecodedCount);

        Console.Write("Decoded chars: ");

        foreach (Char c in chars) { Console.Write("[{0}]", c); }

        Console.WriteLine();

    }

}