Collecting Payment in ASP.Net via PayPal or similar???

[Mike Kingscott]

Hi all,

I have an app that allows users to upload files to my site, and then
download them at a later date. Once the files have been safely
uploaded, I wish to give them a download code to retrieve them at a
later date, but only after they've paid for them via PayPal or
similar.

I am unable to use the standard BuyNow PayPal button as the Form
PostBack method only allows one form per page, and although there is a
ASP.Net PayPal control from Component1, I don't think it will do what
I want, as maybe my logic is flawed...

All I want to to is:

1) User uploads files
2) User is sent to PayPal site, pays for upload, and is returned to my
site
3) User receives a download code to retrieve his files

Behind the scenes, I'd be storing the five filenames in a db, along
with an int identifier which would be the download code, along with
another identifier on the same row which identifies the upload code. I
was thinking of sending the upload code along to PayPal as a
querystring parameter on their PageOK attribute, and then have my page
query the db based on the upload code and get the download code and
give it to the user, but that would mean the whole URL and upload code
would be visible in the page's source, so that's no good.

Anyone have any ideas? I'm drawing a blank, or maybe I need to
approach it from another angle... Maybe the user needs to register so
I can keep track of their downloads... Trying not to do that as I
don't want to run afoul of any data privacy laws...

Kind regards,

Mike K.

 

[vMike]

You can create a hyperlink button which has all the variables as a
querystring instead of using a form.

https://www.paypal.com/cgi-bin/webs....com/images/x-click-but01.gif&add=1&business=
.....etc

you can create as many links on a page that way. It works exactly like the
form post method.
In ASP.NET I to build a string a set the NavigateURL property to set the
link for each hyperlink.