title: ZXing.Net Encode string to QR Code in CF
body: <p>How could I encode my string into a QR Code using <a href="http://zxingnet.codeplex.com">ZXing.Net</a>?</p>
  
  <p>I can already decode, but having problems in encoding. It has an error that says: <em>no encoder available for format AZTEC</em>.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>IBarcodeWriter writer = new BarcodeWriter();
  Bitmap barcodeBitmap;
  var result = writer.Encode("Hello").ToBitmap();
  barcodeBitmap = new Bitmap(result);
  pictureBox1.Image = barcodeBitmap;
  </code></pre>