download csv file from web api in angular js

my API controller is returning a csv file as seen below: [HttpPost] public HttpResponseMessage GenerateCSV(FieldParameters fieldParams) { var output = new byte[] { }; if (fieldParams!= null) { using (var stream = new MemoryStream()) { this.SerializeSetting(fieldParams, stream); stream.Flush(); output = stream.ToArray(); } } var result = new HttpResponseMessage(HttpStatusCode.OK) { Content = new By