Why is the ExecuteResult () method not being called in ASP.NET Web API 2?

I am creating some custom actions as shown below.

public class MyActionResult : ActionResult
{
    public override void ExecuteResult(ControllerContext context)
    {
        context.HttpContext.Response.Status = "my status";
        context.HttpContext.Response.StatusCode = 400;
        context.HttpContext.Response.AppendHeader("MyHeader", "bingo");
        context.HttpContext.Response.Write("some content");
        context.HttpContext.Response.End();
    }
}

      

        
        
        
      

    

And my action method looks like this:

[HttpGet]
[Route("check/{id}")]
public MyActionResult Check(string id)
{
    return new MyActionResult();
}

      

        
        
        
      

    

I set a breakpoint in ExecuteResult (), but it never hit. And I am testing web API like this:

http://localhost:22247/api/v1/check/123

      

        
        
        
      

    

I was expecting to see the content, title, etc. that I have set in the ExecuteResult () method. But the actual result is always a JSON file with empty content as shown below. And the status code is always 200.

{}

      

        
        
        
      

    

Why is the ExecuteResult () method not executing?