private static bool HasUsing(int id) { if (MasterPagePresenter.HasHrmisSystem) { IEmployeeFacade iEmployeeFacade = new EmployeeFacade(); List <Employee> employeeList = iEmployeeFacade.GetAllEmployeeBasicInfoWithOutLoadAccount(); foreach (Employee employee in employeeList) { if (employee.Account != null && employee.Account.Position != null && employee.Account.Position.Grade != null) { if (employee.Account.Position.Grade.Id == id) { return(true); } } } } return(false); }