Help with PayPal

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Bids
18
Avg Bid (USD)
$127
Project Budget (USD)
$30 - $250

Project Description:
I have a very simple assignment:

What we currently have:

We have a website www.proaidpacs.com running on ASP.NET C# that does the following:
An admin of the system takes information from the customer over the phone or in person. The admin fills in all fields on a form and information is being stored into the database. The payment is being done separately (not on the website).

What we want to have:

Besides the admin taking information from the user and charging them separately, we also want to add a self-service. We have to re-use all of the old code, but at the same time make sure that functionality that worked before will continue to work without any glitches the way it used to work.

When a user submits registration information through self-service, prior to the information being saved into the database a payment needs to be made. If payment goes through successfully, all of the information which user filled in will be entered into existing database and notification email will be sent.

So to make things short, we need to develop C# code that submits info to paypal during the registration process and depending if transaction succeeded we follow existing code path without any changes or display a fail message to user.

I only need help with integration with PayPal. Everything else works already.

The form will be identical to below, but with different URL for self service customers. Below URL is for customers that get their info entered via broker.
http://proaidpacs.com/registration/member.aspx

I would prefer to collect credit card information on paypal side, but we can add fields for credit card (CC) to our form as well.

The site is www.proaidpacs.com

Please find me on instant messenger GIM (Google Instant Messenger): dimapolishchuk

Thank you,
Dima

Skills required:
.NET, C# Programming, Paypal API
About the employer:
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