Builtin Base64 Streaming

Months ago I’ve blogged on how to implement base64 streaming reader and writer. Just for the record – the same can be achieved using built-in classes:

class Program

{

    static void Main( string[] args )

    {

        string Original = "foo bar, this is an example";

        byte[] ToBase64;

        string Decoded;

        using ( MemoryStream ms = new MemoryStream() )

        using ( CryptoStream cs = new CryptoStream( ms, new ToBase64Transform(),

                                                        CryptoStreamMode.Write ) )

        using ( StreamWriter st = new StreamWriter( cs ) )

        {

            st.Write( Original );

            st.Flush();

            ToBase64 = ms.ToArray();

        }

        using ( MemoryStream ms = new MemoryStream( ToBase64 ) )

        using ( CryptoStream cs = new CryptoStream( ms, new FromBase64Transform(), 

                                                        CryptoStreamMode.Read ) )

        using ( StreamReader sr = new StreamReader( cs ) )

            Decoded = sr.ReadToEnd();

        Console.WriteLine( Original );

        Console.WriteLine( Encoding.Default.GetString( ToBase64 ) );

        Console.WriteLine( Decoded );

        Console.ReadLine();

    }

}

The output of above snippet is:

foo bar, this is an example

Zm9vIGJhciwgdGhpcyBpcyBhbiBleGFtcGxl

foo bar, this is an example