public static ToTripRequiers GetInstance(Employee employee) { if (State == null) { State = new ToTripRequiers(employee); } if (State.employee.Id != employee.Id) { State = new ToTripRequiers(employee); } return(State); }
private void ShowRequiersToTrip_Click(object sender, RoutedEventArgs e) { WorkingArea.Content = ToTripRequiers.GetInstance(employee); }