How to set custom headers when using IHttpActionResult?

Question

In ASP.NET Web API 2, the IHttpActionResult offers a lot of value in simplifying controller code and I\'m reluctant to stop using it, but I\'ve hit a problem.

Answer 1

Here is my simple implementation without ActionFilterAttributes and is similar to AlexACD's response. My solution uses the ResponseMessageResult which implements the IHttpActionResult interface.

HttpResponseMessage responseMessage = new HttpResponseMessage(HttpStatusCode.OK);
responseMessage.Headers.Add("Headername", "Value");
ResponseMessageResult response = new ResponseMessageResult(responseMessage);
return response;