public string CheckLogin(UserCheckInput userCheckInput) { if (string.IsNullOrEmpty(userCheckInput.CustomerName) || string.IsNullOrEmpty(userCheckInput.Pwd)) { this.HttpContext.Response.StatusCode = 204; return(null); } var customerPwd = _customerService.CheckLogin(userCheckInput); if (customerPwd != null) { return(GetToken(customerPwd.CustomerNo)); } else { this.HttpContext.Response.StatusCode = 204; return(null); } }