title: .NET throw exception with JSON content type
body: <p>I'm working on a web API project that uses the .NET MVC 4 framework. My API is focused around returning JOSN objects, and works perfectly except for when I want to return exceptions in a JSON format.</p>
  
  <p>The code I have below is what I am using to try and force a JSON return, but the response generated from this code is the default HTML content type. I'm looking for a way to return an exception using the "application/json" content type. Any suggestions?</p>
  
  <pre><code>public static void ThrowHttpException(HttpStatusCode code, string content)
  {
      string message = JsonConvert.SerializeObject(new { message = content });
      var resp = new HttpResponseMessage(code)
      {
          Content = new StringContent(message),
          ReasonPhrase = null
      };
      throw new HttpResponseException(resp);
  }
  </code></pre>