public void mainMenu() { while (run) { StandardData = bl.GetAllStandards(); StudentData = bl.GetAllStudents(); DisplayMenu(); InputChoice(); Console.WriteLine("Selected: " + choice + "\n"); switch (Convert.ToInt32(choice)) { #region Standard Switch case 1: // Add AddStandard(); break; case 2: // Update UpdateStandard(); break; case 3: // Remove RemoveStandard(); break; case 4: // Search by ID SearchStandardID(); break; case 5: // Search by name SearchStandardName(); break; case 6: // Display all standards GetStandards(); break; case 7: // Display standard & all students GetStandardAndStudents(); break; #endregion #region Student Switch case 8: // Add AddStudent(); break; case 9: // Update UpdateStudent(); break; case 10: // Remove RemoveStudent(); break; case 11: // Search by ID SearchStudentID(); break; case 12: // Search by name SearchStudentName(); break; case 13: // Display all students GetStudents(); break; case 0: // end Console.WriteLine("Press any key to exit..."); Console.ReadKey(); run = false; break; default: Console.WriteLine("Switch statement error..."); break; #endregion } } }