First of all, IMHO & experience, you should never use a Font to generate a barcode as they are not suitable for real world scenarios (I've had many headaches in the past trying to get my barcodes verified that was not possible with fonts).
Now, you can create QR Codes for free by using Google Charts API
http://googlecode.blogspot.com.ar/2008/07/qr-codes-now-available-on-google-chart.html[
^]
Place an Image control or a simple
html tag in your page and points it to Google Charts API to get the QR Code image displayed.