public static StudentCourse EnrollStudentView()
{
string consoleInput = "";
int studentID, courseID;
bool validStudentID, validCourseID = false;
var studentCourse = new StudentCourse();
Console.Clear();
Console.WriteLine("Add Student to Course:");
Console.Write("Student ID: ");
consoleInput = Console.ReadLine();
validStudentID = Int32.TryParse(consoleInput, out studentID);
Console.Write("Course ID: ");
consoleInput = Console.ReadLine();
validCourseID = Int32.TryParse(consoleInput, out courseID);
if (!validStudentID || !validCourseID)
{
Console.WriteLine("Invalid Student ID or Course ID");
Console.Write("\nPress [Enter] key to continue... ");
Console.ReadLine();
}
else
{
studentCourse.StudentID = studentID;
studentCourse.CourseID = courseID;
}
return studentCourse;
}
public static StudentCourse EnrollStudentView()
{
string ConsoleString = "";
int StudentID, CourseID;
bool ValidStudentID, ValidCourseID = false;
var studentCourse = new StudentCourse();
Console.Clear();
Console.WriteLine("Add Student to Course:");
Console.Write("Student ID: ");
ConsoleString = Console.ReadLine();
ValidStudentID = Int32.TryParse(ConsoleString, out StudentID);
Console.Write("Course ID: ");
ConsoleString = Console.ReadLine();
ValidCourseID = Int32.TryParse(ConsoleString, out CourseID);
if (!ValidStudentID || !ValidCourseID)
{
Console.WriteLine("Invalid Student ID or Course ID");
Console.Write("\nPress [Enter] key to continue... ");
Console.ReadLine();
}
else
{
studentCourse.StudentID = StudentID;
studentCourse.CourseID = CourseID;
}
return studentCourse;
}
public static void EnrollStudent(StudentCourse studentCourse)
{
if (studentCourse != null)
{
using (var context = new EFCoreRefContext())
{
Student student = context.Student.FirstOrDefault(s => s.ID == studentCourse.StudentID);
Course course = context.Course.FirstOrDefault(c => c.ID == studentCourse.CourseID);
if (student != null && course != null)
{
//The student and course exist
StudentCourse CurrentStudentCourses = context.StudentCourse
.Where(sc => sc.StudentID == studentCourse.StudentID)
.Where(sc => sc.CourseID == studentCourse.CourseID)
.FirstOrDefault();
if (CurrentStudentCourses == null)
{
//The student isn't currently enrolled so we are good to add them to the course
context.StudentCourse.Add(studentCourse);
context.SaveChanges();
}
}
}
}
}
public static void MenuHandler()
{
char MenuSelection;
var course = new Course();
do
{
MenuSelection = CourseMenu.Display();
switch (MenuSelection)
{
//List all courses
case '1':
var courses = new List<Course>();
courses = CourseManagement.List();
CourseView.ListCoursesView(courses);
break;
//List all students for a course
case '2':
course = null;
int courseID = CourseView.InputCourseIDView();
course = CourseManagement.GetCourseByID(courseID);
CourseView.ListStudentsEnrolledInCourse(course);
break;
//Add a course
case '3':
course = null;
course = CourseView.AddCourseView();
CourseManagement.AddCourse(course);
break;
//Enroll student in a course
case '4':
var studentCourse = new StudentCourse();
studentCourse = EnrollmentView.EnrollStudentView();
Enrollment.EnrollStudent(studentCourse);
break;
//Delete all courses
case '5':
if (CourseView.InputToDeleteAllView() == "y")
{
if (CourseView.InputAdminPasswordView() == "y")
{
CourseManagement.DeleteAll();
CourseView.DeleteAllView();
}
}
break;
//Exit menu
case '0':
break;
default:
Console.WriteLine("Invalid Selection");
break;
}
} while (MenuSelection != '0');
}
public static void MenuHandler()
{
char MenuSelection;
var student = new Student();
do
{
MenuSelection = StudentMenu.Display();
switch (MenuSelection)
{
//List all students
case '1':
var students = new List<Student>();
students = StudentManagement.List();
StudentView.ListStudentsView(students);
break;
//List all courses for a student
case '2':
int studentID = StudentView.InputStudentIDView();
student = StudentManagement.GetStudentByID(studentID);
StudentView.ListStudentCoursesView(student);
break;
//Add a student
case '3':
student = null;
student = StudentView.AddStudentView();
StudentManagement.AddStudent(student);
break;
//Enroll a student in a course
case '4':
var studentCourse = new StudentCourse();
studentCourse = EnrollmentView.EnrollStudentView();
Enrollment.EnrollStudent(studentCourse);
break;
//Delete all students
case '5':
if (StudentView.InputToDeleteAllView() == "y")
{
if (StudentView.InputAdminPasswordView() == "y")
{
StudentManagement.DeleteAll();
StudentView.DeleteAllView();
}
}
break;
//Exit menu
case '0':
break;
default:
Console.WriteLine("Invalid Selection");
break;
}
} while (MenuSelection != '0');
}