public IActionResult GetOneUserCustomDays(string id) { if (id == null || id == "") { return(new BadRequestObjectResult(new { message = "Please provide a UserId" })); } Guid userGuid; bool success = Guid.TryParse(id, out userGuid); if (success) { return(new OkObjectResult(customDayRepo.GetOneUserCustomDays(id))); } return(new BadRequestObjectResult(new { message = "UserId could not be parsed as a Guid" })); }