How can we make sure that Web API returns JSON data only?

Web Development
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#1

How can we make sure that Web API returns JSON data only?

#2

In Web API project, we need to use the WebApiConfig.cs class.

#3

Just add the following in App_Start / WebApiConfig.cs class in my MVC Web API project.

config.Formatters.JsonFormatter.SupportedMediaTypes
.Add(new MediaTypeHeaderValue(“text/html”) );

That makes sure you get JSON on most queries, but you can get XML when you send text/xml.
If you need to have the response Content-Type as application/json