How to force ASP.NET Web API to always return JSON?

Question

ASP.NET Web API does content negotiation by default - will return XML or JSON or other type based on the Accept header. I don't need / want this, is there a way (like an attribute or something) to tell Web API to always return JSON?

Answer 1

Clear all formatters and add Json formatter back.

GlobalConfiguration.Configuration.Formatters.Clear();
GlobalConfiguration.Configuration.Formatters.Add(new JsonMediaTypeFormatter());

EDIT

I added it to Global.asax inside Application_Start().