How to return on client error message with status code

Question

I tried to use this:

return Request.CreateResponse(HttpStatusCode.InternalServerError, \"My message\");

also I tried this one:

Answer 1

I was able to put a custom message in the error response body with the following code:

Response.TrySkipIisCustomErrors = true;
Response.Clear();
Response.Write( $"Custom Error Message." );
return new HttpStatusCodeResult( HttpStatusCode.InternalServerError );