public void ContinueAddingStudOrNot()
        {
            string answer = CheckContinueOrNot();

            while (answer.ToUpper() == "C")
            {
                Console.Clear();
                Welcome();
                Student s = new Student();
                s.InitStudent();
                Students.Add(s);
                s.PrintTheStudentEntry();
                Console.WriteLine("\n\tPress C to Continue Adding : ");
                Console.WriteLine("\tPress B to go Back to Menu : ");
                Console.Write("\t                           : ");
                answer = StringAnswer();
            }
            if (answer.ToUpper() == "B")
            {
                Console.Clear();
                Welcome();
                InsertMenu();
            }
        }
        // Menu Insert Data

        public void InsertMenu()
        {
            string answer = string.Empty;

            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.WriteLine("\tMENU\n");
            Console.ForegroundColor = ConsoleColor.White;
            Console.WriteLine("\t1. Add new Course\n");
            Console.WriteLine("\t2. Add new Trainer\n");
            Console.WriteLine("\t3. Add new Assignment\n");
            Console.WriteLine("\t4. Add new Student\n");
            Console.Write("\t5. ");
            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.WriteLine("Return to Main Menu\n");
            Console.ForegroundColor = ConsoleColor.White;
            Console.Write("\t0. ");
            Console.ForegroundColor = ConsoleColor.Cyan;
            Console.WriteLine("LogOut\n");
            Console.ForegroundColor = ConsoleColor.White;
            Console.Write("\tChoice : ");
            answer = StringAnswer();
            while (!(answer == "1" || answer == "2" || answer == "3" || answer == "4" || answer == "5" || answer == "0"))
            {
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("\tChoose Between (1,2,3,4,5,0)");
                Console.Beep();
                Console.ForegroundColor = ConsoleColor.White;
                Console.Write("\tChoice : ");
                answer = StringAnswer();
            }
            switch (answer)
            {
            case "1":
                Console.Clear();
                Welcome();
                Course c = new Course();
                c.InitializeCourse();
                Courses.Add(c);
                c.PrintTheCourseEntry();
                ContinueAddingCourseOrNot();
                break;

            case "2":
                Console.Clear();
                Welcome();
                Trainer t = new Trainer();
                t.Initrainer();
                Trainers.Add(t);
                t.PrintTheTrainerEntry();
                ContinueAddingTrainerOrNot();
                break;

            case "3":
                Console.Clear();
                Welcome();
                Assignment a = new Assignment();
                a.InitializeAssignment();
                Assignments.Add(a);
                a.PrintTheAssignmentEntry();
                ContinueAddingAsOrNot();
                break;

            case "4":
                Console.Clear();
                Welcome();
                Student s = new Student();
                s.InitStudent();
                Students.Add(s);
                s.PrintTheStudentEntry();
                ContinueAddingStudOrNot();
                break;

            case "5":
                GobackStartmenu();
                break;

            case "0":
                LogOut();
                break;
            }
        }