private static void ExecuteLecturer(LecturerInvoker invoker, ICommand command)
{
invoker.SetCommand(command);
invoker.Invoke();
}
static void ShowSubMenuLecturerManagement()
{
string userChoose = String.Empty;
Console.Clear();
do
{
// Sub menu Lecturer Management
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("====LECTURER MANAGEMENT MENU===");
Console.WriteLine("===============================");
Console.WriteLine("1. Add new Lecturer");
Console.WriteLine("2. View all Lecturers");
Console.WriteLine("3. Search Lecturer");
Console.WriteLine("4. Delete Lecturer");
Console.WriteLine("5. Update Lecturer");
Console.WriteLine("6. Back to main menu");
Console.WriteLine("===============================");
// User choose
Console.BackgroundColor = ConsoleColor.Red;
Console.Write("Please choose: ");
userChoose = Console.ReadLine();
Console.ResetColor();
// Initialize command
LecturerReceiver lecturerReciever = new LecturerReceiver(Program.ListLecturers);
LecturerInvoker lecturerInvoker = new LecturerInvoker();
switch (userChoose)
{
case "1": // Add new Lecturer menu
// Create new object Lecturer
ExecuteLecturer(lecturerInvoker, new LecturerCommand(lecturerReciever, CommandAction.Add));
break;
case "2": // View all Lecturers menu
// Empty list -> show waring message
ExecuteLecturer(lecturerInvoker, new LecturerCommand(lecturerReciever, CommandAction.ViewAll));
break;
case "3": // Search Lecturer menu
// Empty list -> show waring message
ExecuteLecturer(lecturerInvoker, new LecturerCommand(lecturerReciever, CommandAction.Search));
break;
case "4": // Delete Lecturer menu
// Empty list -> show waring message
ExecuteLecturer(lecturerInvoker, new LecturerCommand(lecturerReciever, CommandAction.Delete));
break;
case "5": // Update Lecturer menu
// Empty list -> show waring message
ExecuteLecturer(lecturerInvoker, new LecturerCommand(lecturerReciever, CommandAction.Update));
break;
case "6": // Back to main menu
ShowMainMenu();
break;
default:
Console.WriteLine("Not correct command. Please input only number (1, 2, 3, 4, 5 or 6)");
ShowSubMenuStudentManagement();
break;
}
} while (userChoose != "6");
}
