title: Stream to write strings and byte[] arrays?
body: <p>What is the stream class to use for writing to the file strings and byte[] arrays?
  File needs to be opened to append or created new if it is absent.</p>
  
  <pre><code>using (Stream s = new Stream("application.log")
  {
      s.Write("message")
      s.Write(new byte[] { 1, 2, 3, 4, 5 });
  }
  </code></pre>