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Presenting iDeal.NET

robinvanderknaap profile image Robin van der Knaap Originally published at Medium on ・2 min read

iDeal is the leading online payment platform in the Netherlands. Last year when working on I had to create an API to interact with our iDeal provider (Rabobank) to handle all online payments. I noticed that a lot of examples existed out there especially for PHP, but nothing really usable for the .NET ecosystem. So I decided to open source the API on GitHub and call it iDeal.NET. The API takes care of all communications with the iDeal provider and is easily integrated into a .NET (web)application.

Supported iDeal versions

iDeal.NET is aimed at iDeal Professional (Rabobank), iDeal Zelfbouw (ABN Amro), iDeal Integrated and iDeal Advanced (ING Bank). These versions allow for real-time feedback on transactions.

iDeal.NET does not yet support iDeal Basic (ING Bank), iDeal Hosted , iDeal Lite (Rabobank) and iDeal Zakelijk which are easily implemented in applications but do not allow for real-time feedback on transactions.

Source, samples and documentation

The source code is hosted on GitHub, this is where you also find the documentation. The solution includes a sample ASP.NET MVC application which shows the basis usage of iDeal.NET. The sample application uses to simulate the entire process of paying and retrieving status of payments. A live version of the example can be found here.


Implementation of iDeal is basically about three types of requests: directory requests, transaction requests and status requests. iDeal.NET provides an easy to use API to send the requests and handle the responses.

A directory request for example, which retrieves a list of bank (issuers), is as easy as:

You can find detailed information about the usage of the API on GitHub


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