I am trying to integrate PayPal with my vb.net application. What I want to do is use a simple payment button, but I need to pass a couple of custom variables back after the transaction has gone through.
I'm really lost in trying to find a direct answer to what I need to do. IPN? PDT? Is it secure? Do I need a SSL certificate? How do I pass my variables?
I just need some simple straightforward documentation and possibly some code samples.
Any help getting directed the right way would be extremely helpful, thanks.