How to change default Web API 2 to JSON formatter?

Question

I have a Web API project that returns some product data. It negotiates the return type correctly depending on the Accept header (JSON/XML) of the request. The problem is, if

Answer 1

I think Web API just uses the first formatter it can find in the Formatters collection. You can change the ordering with something like

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

But it seems the JSON formatter should be the first one by default so you might want to check if you're already modifying this collection somewhere.