Writing to database before HTTP POST

[Erik]

I'm building an e-commerce app. I need to write the user's
order data to a SQL Server database before sending the
order data to the credit card processor's secure server
(which is a different domain) via an HTTP POST.

I have the database routines working, but haven't figured
out how to send the form data to the credit card
processor's domain as an HTTP POST. Neither
Response.Redirect (doesn't retain the HTTP POST format) or
Server.Transfer (doesn't work across domains) work.

What am I missing?

 

[Peter Vervoorn]

You need to create a request yourself, not modify the incoming one.
For that purpose you can use the System.Net.HttpRequest class.