Beispiel #1
0
        static void Main(string[] args)
        {
            IndividualProjectDBModel iPModel     = new IndividualProjectDBModel();
            List <Student>           studentList = iPModel.Students.ToList();
            Student           student            = new Student();
            List <Trainer>    trainerList        = iPModel.Trainers.ToList();
            Trainer           trainer            = new Trainer();
            List <Assignment> assignmentList     = iPModel.Assignments.ToList();
            Assignment        assignment         = new Assignment();
            List <Course>     courseList         = iPModel.Courses.ToList();
            Course            course             = new Course();
            bool menuFlag       = true;
            bool selectDataFlag = true;
            bool addDataFlag    = true;

            do
            {
                Console.WriteLine("---Main Menu---");
                Console.WriteLine("Type");
                Console.WriteLine("1: To select data from database");
                Console.WriteLine("2: To add data to the database");
                Console.WriteLine("3: To exit");
                int.TryParse(Console.ReadLine(), out int menuChoice);
                switch (menuChoice)
                {
                case 1:
                    SelectData();
                    break;

                case 2:
                    AddData();
                    break;

                case 3:
                    menuFlag = false;
                    break;

                default:
                    Console.WriteLine("Invalid input, please try again\n");
                    break;
                }
            } while (menuFlag);

            void SelectData()
            {
                do
                {
                    Console.WriteLine("\nType");
                    Console.WriteLine("1: To show all the students");
                    Console.WriteLine("2: To show all the trainers");
                    Console.WriteLine("3: To show all the assignments");
                    Console.WriteLine("4: To show all the courses");
                    Console.WriteLine("5: To show all the students per course");
                    Console.WriteLine("6: To show all the trainers per course");
                    Console.WriteLine("7: To show all the assignments per course");
                    Console.WriteLine("8: To show all the assignments per course per student");
                    Console.WriteLine("9: To show a list of students who belong to more than one courses");
                    Console.WriteLine("10: To show all students course has based on given course number(#)");
                    Console.WriteLine("11: To show all trainers course has based on given course number(#)");
                    Console.WriteLine("12: To show all assignments course has based on given course number(#)");
                    Console.WriteLine("13: To show all students and assignments course has based on given course number(#)");
                    Console.WriteLine("14: To go back to the main menu");
                    int.TryParse(Console.ReadLine(), out int menuChoice);
                    switch (menuChoice)
                    {
                    case 1:
                        student.ListOfStudents(iPModel);
                        break;

                    case 2:
                        trainer.ListOfTrainers(iPModel);
                        break;

                    case 3:
                        assignment.ListOfAssignments(iPModel);
                        break;

                    case 4:
                        course.ListOfCourses(iPModel);
                        break;

                    case 5:
                        student.StudentsPerCourse(iPModel);
                        break;

                    case 6:
                        trainer.TrainersPerCourse(iPModel);
                        break;

                    case 7:
                        assignment.AssignmentsPerCourse(iPModel);
                        break;

                    case 8:
                        assignment.AssignmentsPerCoursePerStudent(iPModel);
                        break;

                    case 9:
                        student.StudentsWithMoreCourses(iPModel);
                        break;

                    case 10:
                        student.ShowStudentsBasedOnCourseNumber(iPModel);
                        break;

                    case 11:
                        trainer.ShowTrainersBasedOnCourseNumber(iPModel);
                        break;

                    case 12:
                        assignment.ShowAssignmentsBasedOnCourseNumber(iPModel);
                        break;

                    case 13:
                        assignment.ShowStudentsAssignmentsBasedOnCourseNumber(iPModel);
                        break;

                    case 14:
                        selectDataFlag = false;
                        break;

                    default:
                        Console.WriteLine("Invalid input, please try again\n");
                        break;
                    }
                } while (selectDataFlag);
                selectDataFlag = true;
            }

            void AddData()
            {
                do
                {
                    Console.WriteLine("\nType");
                    Console.WriteLine("1: To add students");
                    Console.WriteLine("2: To add trainers");
                    Console.WriteLine("3: To add assignments");
                    Console.WriteLine("4: To add courses");
                    Console.WriteLine("5: To select which student to connect with course");
                    Console.WriteLine("6: To select which trainer to connect with course");
                    Console.WriteLine("7: To select which assignment to connect with course");
                    Console.WriteLine("8: To go back to the main menu");
                    int.TryParse(Console.ReadLine(), out int menuChoice);
                    switch (menuChoice)
                    {
                    case 1:
                        student.AddStudents(iPModel, studentList.Count);
                        break;

                    case 2:
                        trainer.AddTrainers(iPModel, trainerList.Count);
                        break;

                    case 3:
                        assignment.AddAssignments(iPModel, assignmentList.Count);
                        break;

                    case 4:
                        course.AddCourses(iPModel, courseList.Count);
                        break;

                    case 5:
                        student.AddStudentsPerCourse(iPModel);
                        break;

                    case 6:
                        trainer.AddTrainersPerCourse(iPModel);
                        break;

                    case 7:
                        assignment.AddAssignmentsPerCourse(iPModel);
                        break;

                    case 8:
                        addDataFlag = false;
                        break;

                    default:
                        Console.WriteLine("Invalid input, please try again\n");
                        break;
                    }
                } while (addDataFlag);
                addDataFlag = true;
            }
        }