static void Main(string[] args) { BusinessLayer BL = new BusinessLayer(); int choice, option, id; string answer; bool exit = false; Teacher teach = new Teacher(); Course course = new Course(); Console.WriteLine("Repository Application Menu"); while (exit == false) { Console.WriteLine("\n1. Add a Teacher\n" + "2. Update a Teacher\n" + "3. Delete a Teacher\n" + "4. Courses taught by Teacher(input ID)\n" + "5. Display all Teachers\n\n" + "6. Add a Course\n" + "7. Update a Course\n" + "8. Delete a Course\n" + "9. Display all Courses\n" + "0. Exit\n"); choice = Convert.ToInt32(Console.ReadLine()); try { switch (choice) { case 0: //exit exit = true; break; case 1: //add teach Console.WriteLine("add a Teacher's name: "); teach.TeacherName = Console.ReadLine(); BL.AddTeacher(teach); break; case 2: //update teach Console.WriteLine("Search by:\n1. ID\n2. name"); option = Convert.ToInt32(Console.ReadLine()); if (option == 1) //search by ID { Console.WriteLine("Enter ID: "); id = Convert.ToInt32(Console.ReadLine()); teach = BL.GetTeacherByID(id); } else if (option == 2) //search by name { Console.WriteLine("Enter Name: "); string name = Console.ReadLine(); teach = BL.GetTeacherByName(name); } Console.WriteLine("Current name: {0} with id: {1}", teach.TeacherName, teach.TeacherId); Console.WriteLine("Change name: "); teach.TeacherName = Console.ReadLine(); BL.UpdateTeacher(teach); break; case 3: //delete teach Console.WriteLine("Search by:\n1. ID\n2. name"); option = Convert.ToInt32(Console.ReadLine()); if (option == 1) //search by ID { Console.WriteLine("Enter ID: "); id = Convert.ToInt32(Console.ReadLine()); teach = BL.GetTeacherByID(id); } else if (option == 2) //search by name { Console.WriteLine("Enter Name: "); string name = Console.ReadLine(); teach = BL.GetTeacherByName(name); } Console.WriteLine("Current name: {0} with id: {1}", teach.TeacherName, teach.TeacherId); Console.WriteLine("Delete this? (Y/N)"); while (exit == false) //confirm deletion { answer = Console.ReadLine(); if (answer == "y" || answer == "Y") { BL.RemoveTeacher(teach); exit = true; } else if (answer == "n" || answer == "N") { exit = true; } else { Console.WriteLine("only y or n"); } } exit = false; break; case 4: //courses taught by teacher BL.GetAllCourse(); Console.WriteLine("Enter a teacher ID: "); id = Convert.ToInt32(Console.ReadLine()); teach = BL.GetTeacherByID(id); Console.WriteLine("Teacher name: {0}\nCourse(s) teaching:\n", teach.TeacherName); foreach (Course c in teach.Courses) { Console.WriteLine(c.CourseName); } break; case 5: //all teachers Console.WriteLine("{0}\t{1}", "Teacher Name", "Teacher ID"); Console.WriteLine("___________________________"); foreach (Teacher t in BL.GetAllTeacher()) { Console.WriteLine("{0}\t{1}", t.TeacherName, t.TeacherId); } break; case 6: //add course Console.WriteLine("add a Course name: "); course.CourseName = Console.ReadLine(); Console.WriteLine("Who teaches this course?(Enter ID)\n"); course.TeacherId = Convert.ToInt32(Console.ReadLine()); BL.AddCourse(course); break; case 7: //update course Console.WriteLine("Search by:\n1. ID\n2. name"); option = Convert.ToInt32(Console.ReadLine()); if (option == 1) //search by ID { Console.WriteLine("Enter ID: "); id = Convert.ToInt32(Console.ReadLine()); BL.GetCourseByID(id);; } else if (option == 2) //search by name { Console.WriteLine("Enter Name: "); string name = Console.ReadLine(); BL.GetCourseByName(name); } Console.WriteLine("Current name: {0} with id: {1}", course.CourseName, course.CourseId); Console.WriteLine("Change name: "); course.CourseName = Console.ReadLine(); BL.UpdateCourse(course); break; case 8: //delete course Console.WriteLine("Search by:\n1. ID\n2. name"); option = Convert.ToInt32(Console.ReadLine()); if (option == 1) //search by ID { Console.WriteLine("Enter ID: "); id = Convert.ToInt32(Console.ReadLine()); course = BL.GetCourseByID(id); } else if (option == 2) //search by name { Console.WriteLine("Enter Name: "); string name = Console.ReadLine(); course = BL.GetCourseByName(name); } Console.WriteLine("Current name: {0} with id: {1}", course.CourseName, course.CourseId); Console.WriteLine("Delete this? (Y/N)"); while (exit == false) //confirm deletion { answer = Console.ReadLine(); if (answer == "y" || answer == "Y") { BL.RemoveCourse(course); exit = true; } else if (answer == "n" || answer == "N") { exit = true; } else { Console.WriteLine("only y or n"); } } exit = false; break; case 9: //all courses Console.WriteLine("{0}\t{1}", "Course Name", "Course ID"); Console.WriteLine("___________________________"); foreach (Course c in BL.GetAllCourse()) { Console.WriteLine("{0}\t\t{1}", c.CourseName, c.CourseId); } break; } } catch (Exception) { Console.WriteLine("Item does not exist"); } } Console.WriteLine("Press any key to continue . . ."); Console.ReadKey(); }
public static void Main(string[] args) { IBusinessLayer businessLayer = new BusinessLayer.BusinessLayer(); bool cont = true; string userInput; while (cont) { Console.WriteLine("CRUD Operations School Database"); Console.WriteLine("1) Table Teacher "); Console.WriteLine("2) Table Course "); Console.WriteLine("3) Exit"); string menu1 = Console.ReadLine(); switch (menu1) { case "1": userInput = menuTableTeacher(); if (userInput == "1") { Teacher newTeach = new Teacher(); Console.WriteLine("Enter Teacher Name: "); //string name = Console.ReadLine(); newTeach.TeacherName = Console.ReadLine(); businessLayer.AddTeacher(newTeach); } else if (userInput == "2") { Console.WriteLine("Enter ID: "); string temp = Console.ReadLine(); int id = int.Parse(temp); Teacher newTeach = businessLayer.GetTeacherByID(id); if (newTeach != null) { Console.WriteLine(newTeach.TeacherId + " " + newTeach.TeacherName); ICollection <Course> courses = newTeach.Courses; foreach (Course course in courses) { Console.WriteLine(course.CourseId + " " + course.CourseName); } } else { Console.WriteLine("Teacher not found!!!"); } } else if (userInput == "3") { Console.WriteLine("Enter Teacher ID to Update: "); string temp = Console.ReadLine(); int id = int.Parse(temp); Teacher newTeach = businessLayer.GetTeacherByID(id); Console.WriteLine("Enter Teacher new Name: "); //string name = Console.ReadLine(); newTeach.TeacherName = Console.ReadLine(); businessLayer.UpdateTeacher(newTeach); } else if (userInput == "4") { Console.WriteLine("Enter Teacher ID to Delete: "); string temp = Console.ReadLine(); int id = int.Parse(temp); Teacher newTeach = businessLayer.GetTeacherByID(id); businessLayer.RemoveTeacher(newTeach); } else { IList <Teacher> teachers = businessLayer.GetAllTeacher(); foreach (Teacher teacher in teachers) { Console.WriteLine(string.Format("{0} - {1}", teacher.TeacherId, teacher.TeacherName)); } } break; case "2": userInput = menuTableCourse(); if (userInput == "1") { Course newCourse = new Course(); Console.WriteLine("Enter New Course Name: "); string name = Console.ReadLine(); newCourse.CourseName = name; businessLayer.AddCourse(newCourse); } else if (userInput == "2") { Console.WriteLine("Enter ID: "); string temp = Console.ReadLine(); int id = int.Parse(temp); Course newCourse = businessLayer.GetCourseByID(id); if (newCourse != null) { Console.WriteLine(newCourse.CourseId + " " + newCourse.CourseName); } else { Console.WriteLine("Course not found!!!"); } } else if (userInput == "3") { Console.WriteLine("Enter Course ID to Update: "); string temp = Console.ReadLine(); int id = int.Parse(temp); Course newCourse = businessLayer.GetCourseByID(id); Console.WriteLine("Enter Course new Name: "); newCourse.CourseName = Console.ReadLine(); businessLayer.UpdateCourse(newCourse); } else if (userInput == "4") { Console.WriteLine("Enter Course ID to Delete: "); string temp = Console.ReadLine(); int id = int.Parse(temp); Course newCourse = businessLayer.GetCourseByID(id); businessLayer.RemoveCourse(newCourse); } else { IList <Course> courses = businessLayer.GetAllCourse(); foreach (Course course in courses) { Console.WriteLine(string.Format("{0} - {1}", course.CourseId, course.CourseName)); } } break; case "3": cont = false; break; default: continue; } } }