Question

What is a way i can encode information into a binary file using BinaryWriter. Without anybody being able to see the information.

What i am creating needs to be able to load a binary file (& read it using BinaryReader) and interpret the data.

So for example i had a set of instructions like

op1
op2 variable
op3
op4 string "Hello World"

How can i put that and other files into a binary file without anybody seeing the data.

Answer 1

Depends on how secure you need it to be.

I am using a zip-stream just to wave off curios onlookers….

EDIT: An example for an xml-file

public void save( String filename )
{
    XmlSerializer s = new XmlSerializer( this.GetType( ) );
    MemoryStream w = new MemoryStream( 4096 );

    TextWriter textWriter = new StreamWriter( w );

    s.Serialize( textWriter, this );

    FileStream f = new FileStream( filename, FileMode.CreateNew );
    DeflateStream zipStream = new DeflateStream( f, CompressionMode.Compress );

    byte[] buffer = w.GetBuffer( );
    zipStream.Write( buffer, 0, buffer.Length );

    zipStream.Close( );
    textWriter.Close( );
    w.Close( );
    f.Close( );
}

hth

Mario