My WebAPI method returns a status code as well as a boolean value:
[HttpPost]
public async Task<HttpResponseMessage> Register([FromBody]string parameter)
{
HttpStatusCode statusCode = HttpStatusCode.OK;
RegisterUserResult result = await _service.RegisterAsync(parameter);
if (result == RegisterUserResult.AlreadyExists)
{
statusCode = HttpStatusCode.NoContent;
}
else if (result == RegisterUserResult.Created)
{
statusCode = HttpStatusCode.Created;
}
return Request.CreateResponse(statusCode, true);
}
On client side, I call HttpContent.ReadAsAsync method to check the boolean value in the response after making the API call:
HttpResponseMessage response = await client.PostAsJsonAsync(uri, parameter);
if (response.IsSuccessStatusCode)
{
bool result = await response.Content.ReadAsAsync<bool>(); // result is false!
return result;
}
The problem is that result returns as false . What could I be missing?
I realized that this happens because I am returning HttpStatusCode.Created
for the initial action (user creation), however return HttpStatusCode.NoContent
for subsequent actions on the same user.
if (result == RegisterUserResult.AlreadyExists)
{
statusCode = HttpStatusCode.NoContent;
}
While HttpStatusCode.NoContent is a successful status code, it will prevent providing a return value in Request.CreateResponse method by returning the default value of your intended return type. Meaning
Request.CreateResponse(statusCode, "True"); // returns null on client-side
Request.CreateResponse(statusCode, true); // returns false on client-side
Other success codes such as HttpStatusCode.OK or HttpStatusCode.Created will make sure that the intended value will be returned.
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