Web API 2.2 always returns JSON content

Question

My simple Action method below always returns JSON, regardless of having Accept header set to application/xml. Content negotiation works fine on other actions I have in this same controller.

public HttpResponseMessage GetOrder(int id) {
    var orderDescription = mydbc.tbl_job_versions.AsNoTracking().Where(t => t.JobId == id)
      .Select(t => new{Id = t.JobId,  Description = t.Brand + " " + t.Variety + " " + t.Promotion  + " " + t.MarketSegment }).FirstOrDefault ();

    if (orderDescription == null) {
      return new HttpResponseMessage(HttpStatusCode.NotFound);
    }
    else {
      return Request.CreateResponse((HttpStatusCode)200, orderDescription);
    }
 }

What might be causing this to not perform content negotiation and instead always return JSON?

Kiran Challa Kiran Challa · Accepted Answer · 2015-03-05T16:11:20

You can check my answer here : https://stackoverflow.com/a/22918118/1184056

Looks like the xml formatter is unable to say that it can write the object that you are giving to it and so you are not seeing the response in json.

Web API 2.2 always returns JSON content

2 Answers