Braintree-Paypal drop-in working example for C# and VB.NET

I could not find a working example for PayPal and Braintree integration with ASP.NET webforms so I made one. There are many posts on every forum with people having problems with this integration. The paypal script intercepts the normal .net page flow and it is impossible to complete a transaction.

This project has the minimum code needed to do the job. It is mostly for proof of concept but it works 100% fine!

The latest Braintree SDK is used.

• Braintree 4.8.0.0 library for .NET
• Braintree Javascript 3.42.0 for the client.

Please "star" this repo if you find it usefull.

How it works

It is impossible to complete a transaction in a single page.

The solution is simple: When the paypal script posts the payment_token_nonce to the page, I intercept the normal page flow with Server.Transfer to transfer the workflow to a new page (ProcessPayment.aspx).

Server.Transfer terminates execution of the current page and starts execution of a new page.

Then I execude the transaction without the problem caused by the PayPal and asp.net scripts.

After the transaction is complete, Success.aspx or Fail.aspx is executed.

Getting Started

There are two projects, one for C# and one for VB.NET. Right click on the project you want to run and select "Set as startup project."

Prerequisites

1. PayPal account.
2. Braintree account.
3. The PayPal account is linked to the Braintree account.
4. 

Be very careful with your API credentials!

1. Do not share them with anyone!
2. Create sandbox accounts on both PayPal and Braintree. Use the sandbox accounts for development. Replace the sandbox credentials with the production credentials only when you are ready to put the app in production.
3. Be very careful if you publish your project on GitHub. Clear your credentials before publishing the project.

Installation

Before you run the project you should initialize the BraintreeGateway with your API credentials.

myBraintreeGateway = New BraintreeGateway With { .Environment = Environment.SANDBOX, .MerchantId = "replace_with_your_merchand_id", .PublicKey = "replace_with_your_public_key", .PrivateKey = "replace_with_your_private_key" }

Author

Stavros Dimopoulos

My LinkedIn profile

License

This project is licensed under the MIT License - see the LICENSE.md file for details

Donation

It's my first open source projet.

I've seen this button many times, I do not know what it does ( :-p ) but I guess it is not a bad idea to have it in my project repo ;-)

Credits

I got the PayPal image from this page.