Is it possible to integrate braintree payment gateway with .net desktop application rather than Website, And Mobile applications? As per their documentation, they have three Client SDKs (JS, Android, IOS).
Best Answer
For it to be secure you should have an HTTPS web service handling the server-side portion of the Braintree integration. This server does not need to serve any HTML. It does need to handle the server-side API communication with Braintree servers, and send the token to the client when requested, and receive the nonce from the client and use it to create transactions.
The "desktop" client .NET application should use the JS SDK. Theoretically the client could implement HTTPS calls in native .NET with no JS SDK, but it will be far simpler and more robust to use the JS SDK provided by Braintree in your .NET application.