Online Credit Card Transaction in ASP.NET Using PayPal Payflow Pro

Introduction
To do an online credit card transaction in ASP.NET using PayPal Payflow Pro, you’ll need to set up a Payflow Pro online payment gateway account at PayPal.com, download and install .NET SKD for Payflow Pro, and create an ASP.NET application that sends a transaction request to and receives a transaction response from Payflow Pro.

Payflow Pro Online Payment Gateway Account

At the time of writing this article, the account creation link is: https://registration.paypal.com/welcomePage.do?producttype=C2&country=US&mode=try. PayPal documentation indicates that a testing account can be created, which can then be activated as a production account if needed. Upon the completion of an account setup, you’ll have four user parameters as login credentials to access the account, as shown in the table below.

Read more: Codeproject

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PayPal Helper for WebMatrix

Introduction
   Microsoft WebMatrix provides an easy way to get started with web development, and together with new Razor syntax for ASP.NET Web Pages it includes everything you need to get your web site up, running and integrated with many other sites and networks, in a short period of time. The WebMatrix helpers are designed to make your life easier when creating web sites. They provide you a simple and consistent way of performing common web development tasks that otherwise would require a great deal of custom coding. With a few lines of code you should be able to secure your web site using membership, store information in Windows Azure Storage, integrate your site with Facebook, among others things.

The PayPal helper for WebMatrix allows you to integrate PayPal payments within your WebMatrix website or e-commerce application. With a few lines of code, you’ll enable your Web site customers to click on a payment button to pay for their purchases with their PayPal accounts.

The helper supports both the PayPal Button Manager API and the Adaptive Payments API. Using the Button Manager API you will be able to create (and manage) PayPal buttons like Add To Cart or Buy Now, that will let your customers purchase single or multiple items, among other things. With the Adaptive Payments API you can process from your WebMatrix web site PayPal transactions, in both simple and complex scenarios. You can build Web applications that handle payments, preapprovals for payments, and refunds.

Get Started in 60 seconds

1. Download the assemblies for the PayPal Helper (PayPal.dll, paypal_base.dll, log4net.dll)
2. Create a new website or template in WebMatrix
3. Create a bin folder off the root
4. Copy and paste the assemblies into the bin folder
5. Download the Documentation for instructions on using the helper
6. You're done, start using PayPal for payments!

Read more: Codeplex

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