I’m looking for some help using PayPal REST API. I would like to be able to:

1. Authenticate using OAuth 2.0

2. Create a payment using direct credit card payments

3. Look up a sale

4. Refund a sale

5. Look up a refund

The documentation and resource references can be found here: [url removed, login to view]

The deliverable will be a well-structured C# windows application (Visual Studio 2013) that uses HttpClient to perform the above functionality with PayPal sandbox credentials. The JSON input and results will need to be translated (serialized and deserialized) to C# classes. Once I’ve tested sample app functionality with my own live credentials and code is reviewed for cleanliness and efficiency with satisfaction, the project will be complete.

If you are interested in this project, please indicate your experience with PayPal REST API, HttpClient, when you can get started, and expected time to complete.

I would like to get started on this as soon as possible, so please provide your most competitive bid.

Habilidades: Programação C#, API PayPal, RESTful , Arquitetura de software, Área de trabalho do Windows

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Acerca do Empregador:
( 91 comentários ) Vernon, Canada

ID do Projeto: #11199818

Concedido a:


Hello, I have been worked on API integration in C# and delivered successfully to clients. You can see my jobs history and reviews. I have worked on PayUAPI, SQuareConnect and Bitcoin API for sandbox environment. Mais

$150 CAD em 3 dias
(45 Comentários)

14 freelancers estão ofertando em média $288 para esse trabalho


Hi there - My name is Khorshed. I've read your brief and can see that you’d like to implement Paypal rest API. I can help you get this done. I have recently integrated this into a Woocommerce website. I would love to d Mais

$315 CAD in 7 dias
(78 Comentários)

Hello. We have a lot of experience with different kinds of PayPal payment gateway integrations into ASP.NET websites from the simplest Standard to PayPal Pro and recurring profiles and payments. We'd like to help you o Mais

$666 CAD in 4 dias
(30 Comentários)

hi. I have 3+ years of experience in C#. I have worked with a lot of REST APIs (including but not limited to Facebook, Instagram, Twitter, MailChimp, SurveyMonkey etc). I have worked with OAuth 1.0a and 2.0. here's one Mais

$200 CAD in 5 dias
(50 Comentários)

Hi,I have gone through your project description. I could be confident if we can proceed towards more discussion. I am an individual developer and you will be working directly with me if we proceed work on this project Mais

$555 CAD in 7 dias
(4 Comentários)

I have experience, please see the small code structure string PayPalBaseUrl = "[login to view URL]"; HttpWebRequest req = (HttpWebRequest)[login to view URL](PayPalBaseUrl Mais

$311 CAD in 7 dias
(5 Comentários)

Hi, I have read your job description. Have some questions in which I am interested to get an answers from your side. Can we do a small discussion on this? Kelly

$155 CAD in 3 dias
(5 Comentários)

Hi, thank you for showing interest in my bid proposal. I can provide your desired solution within agreed price and time. I can guarantee that the solution will meet your expectation very well. I am a Technical Archi Mais

$277 CAD in 5 dias
(9 Comentários)

Hello sir, Greetings from Niral Patel, I gone through the detailed requirement and found that you are looking for someone who is experienced with PHP REST API Integration with Payment Gateway for credit card and p Mais

$222 CAD in 5 dias
(2 Comentários)

Hello Sir , I have 4 year exp. on .net and i have integrated pay-pal on more then 300 projects and also with refund functionality. please share details on chart and we can complete it asap. Thanks and regards er. Mais

$111 CAD in 3 dias
(0 Comentários)

Hello Sir, After reading over your application this looks like a perfect fit for my skill sets. We have built a large number of corporate website and software specifically on the Microsoft platform. My name is Mais

$155 CAD in 3 dias
(0 Comentários)

It would be a C# console application. It would expose the following functions. CreatePayment(credentials, secret, [inputsNeededByApi]) lookUpSale(credentials, secret, [inputsNeededByApi]) refundSale(credentials Mais

$155 CAD in 3 dias
(0 Comentários)
$155 CAD in 3 dias
(0 Comentários)

Does it sound logical to you to have your paypal API credentials residing in a customer facing application? I would build a server that would process paypal requests on behalf of your customers.

$611 CAD in 7 dias
(0 Comentários)