How do I implement Google checkout order processing

Question

I am looking for sample .Net code to handle the order processing from google checkout. I will be using the HTML Api as it does not require SSL.

I found this Custom Order Processing Tutorial but it is using Java.

I eventually want to use Google Subscriptions and I am hoping that a sample Order processing code would give me enough information to complete my Google subscription integration.

[EDIT]

Is there an open source end to end solution which implements Google Checkout subscription and order processing using .Net?
I am hoping that I can implement my own by looking at an example.
I have a very simple task, google button click goes to google checkout, customer pays for subscription that is charged a monthly amount. Google sends a response or notification which my system processes and updates my database.

Answer 1

Google provides code samples.

http://code.google.com/apis/checkout/samples/Google_Checkout_Sample_Code_NET.html