public ActionResult Delete(IEnumerable <string> userIds) { if (userIds == null || userIds.Count() == 0) { return(new ResponseModel <int>(ErrorCode.success, 0)); } var count = user.DeleteUser(userIds); if (count == -1) { return(new ResponseModel <string>(ErrorCode.record_has_been_used, "")); } if (count > 0) { return(new ResponseModel <string>(ErrorCode.success, "")); } else { return(new ResponseModel <string>(ErrorCode.server_exception, "")); } }