public async Task <IActionResult> CheckUsername( [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "users/CheckUsername/{username}")] HttpRequestMessage req, HttpRequest request, ILogger log, string username) { if (String.IsNullOrEmpty(username)) { return(new BadRequestObjectResult(_errors.ValuesNotValid)); } var dataResult = await _controller.CheckUsername(username); if (!dataResult.Success) { return(new BadRequestObjectResult(dataResult.Message)); } return(new OkObjectResult(dataResult.Value)); }