I'm writing a RESTful API in Web API and I'm not sure how to handle errors effectively. I want the API to return JSON, and it needs to consist of the exact same format every single time - even on errors. Here are a couple of examples of what a successful and a failed response might look like.
Message: "An error occurred!",
If there is an exception - any exception at all, I want to return a response that is formed like the second one. What is the foolproof way to do this, so that no exceptions are left unhandled?