How do I get ASP.NET Web API to return JSON instead of XML using Chrome?

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Note: Read the comments of this answer, it can produce a XSS Vulnerability if you are using the default error handing of WebAPI

I 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 please check Todd’s answer below.

NameSpace is using System.Net.Http.Headers.

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