Imports System
Imports System.Text
Imports Microsoft.VisualBasic.Strings

Class UTF8EncodingExample

    Public Shared Sub Main()
        ' Create a UTF-8 encoding.
        Dim utf8 As New UTF8Encoding()

        ' A Unicode string with two characters outside an 8-bit code range.
        Dim unicodeString As String = _
            "This unicode string contains two characters " & _
            "with codes outside an 8-bit code range, " & _
            "Pi (" & ChrW(928) & ") and Sigma (" & ChrW(931) & ")."
        Console.WriteLine("Original string:")
        Console.WriteLine(unicodeString)

        ' Encode the string.
        Dim encodedBytes As Byte() = utf8.GetBytes(unicodeString)
        Console.WriteLine()
        Console.WriteLine("Encoded bytes:")
        Dim b As Byte
        For Each b In  encodedBytes
            Console.Write("[{0}]", b)
        Next b
        Console.WriteLine()

        ' Decode bytes back to string.
        ' Notice Pi and Sigma characters are still present.
        Dim decodedString As String = utf8.GetString(encodedBytes)
        Console.WriteLine()
        Console.WriteLine("Decoded bytes:")
        Console.WriteLine(decodedString)
    End Sub
End Class

using System;
using System.Text;

class UTF8EncodingExample {
    public static void Main() {
        // Create a UTF-8 encoding.
        UTF8Encoding utf8 = new UTF8Encoding();

        // A Unicode string with two characters outside an 8-bit code range.
        String unicodeString =
            "This unicode string contains two characters " +
            "with codes outside an 8-bit code range, " +
            "Pi (\u03a0) and Sigma (\u03a3).";
        Console.WriteLine("Original string:");
        Console.WriteLine(unicodeString);

        // Encode the string.
        Byte[] encodedBytes = utf8.GetBytes(unicodeString);
        Console.WriteLine();
        Console.WriteLine("Encoded bytes:");
        foreach (Byte b in encodedBytes) {
            Console.Write("[{0}]", b);
        }
        Console.WriteLine();

        // Decode bytes back to string.
        // Notice Pi and Sigma characters are still present.
        String decodedString = utf8.GetString(encodedBytes);
        Console.WriteLine();
        Console.WriteLine("Decoded bytes:");
        Console.WriteLine(decodedString);
    }
}

using namespace System;
using namespace System::Text;
using namespace System::Collections;
int main()
{

   // Create a UTF-8 encoding.
   UTF8Encoding^ utf8 = gcnew UTF8Encoding;

   // A Unicode string with two characters outside an 8-bit code range.
   String^ unicodeString = L"This unicode string contains two characters with codes outside an 8-bit code range, Pi (\u03a0) and Sigma (\u03a3).";
   Console::WriteLine( "Original string:" );
   Console::WriteLine( unicodeString );

   // Encode the string.
   array<Byte>^encodedBytes = utf8->GetBytes( unicodeString );
   Console::WriteLine();
   Console::WriteLine( "Encoded bytes:" );
   IEnumerator^ myEnum = encodedBytes->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Byte b = safe_cast<Byte>(myEnum->Current);
      Console::Write( "[{0}]", b );
   }

   Console::WriteLine();

   // Decode bytes back to string.
   // Notice Pi and Sigma characters are still present.
   String^ decodedString = utf8->GetString( encodedBytes );
   Console::WriteLine();
   Console::WriteLine( "Decoded bytes:" );
   Console::WriteLine( decodedString );
}