Retreiving httpResponse StatusCode from API - rest

Question

This is the HTTP response I send from my API if there's an error.
return new System.Net.Http.HttpResponseMessage() { StatusCode = (System.Net.HttpStatusCode)System.Net.HttpStatusCode.BadRequest, ReasonPhrase = "Incoming element is null" };
which Postman sees correctly as
"statusCode": 400,
"reasonPhrase": "Incoming element is null",
So the API code is fine, however, when I call the API from my console application the HttpWebResponse using the following
var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://localhost/");
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
httpResponse.StatusCode is OK.
How do I get the returned StatusCode from the API to be accessible/visible in the calling console application.

Answer 1

The httpResponse is the "I am connected" response not the returned response from the API, that was in accessed using
using (var streamReader = new StreamReader(httpResponse.GetResponseStream())) {
string result = streamReader.ReadToEnd();
to stream the result back from the API which was the JSON response being picked up by Postman.
So instead I deserialised the returned JSON into an object and used that to make my validation checks, like so. First my storage class
public class ReturnedJSONModel {
public System.Net.HttpStatusCode statusCode { get; set; }
public string reasonPhrase { get; set; }
}
then this to populate it and handle the response (note this is a Console program so uses Console.WriteLine to report success/failure.
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
if (httpResponse.StatusCode == HttpStatusCode.OK) {
using (var streamReader = new StreamReader(httpResponse.GetResponseStream())) {
string result = streamReader.ReadToEnd();
ReturnedJSONModel objJSON = JsonConvert.DeserializeObject<ReturnedJSONModel>(result);
switch(objJSON.statusCode) {
case System.Net.HttpStatusCode.Accepted:
Console.WriteLine("Success : " + objJSON.reasonPhrase);
break;
case System.Net.HttpStatusCode.BadRequest:
Console.WriteLine("BadRequest : " + objJSON.reasonPhrase);
break;
case System.Net.HttpStatusCode.ServiceUnavailable:
Console.WriteLine("ServiceUnavailable : " + objJSON.reasonPhrase);
break;
default:
Console.WriteLine("Unknown error : " + objJSON.reasonPhrase);
break;
}
}
} else {
Console.WriteLine("Error StatusCode = " + httpResponse.StatusCode);
}