public void AddStudentToCourse(Student student, Course course)
{
if (student == null)
{
throw new ArgumentNullException("Student cannot be null.");
}
if (!this.courses.Contains(course))
{
throw new ArgumentException("Course does not exists in this school.");
}
if (!this.students.Contains(student))
{
throw new ArgumentException("Student does not exists in this school.");
}
if (course.Students.Count >= course.StudentsCapacity)
{
throw new ArgumentException("Course capacity is filled.");
}
if (course.Students.Contains(student))
{
throw new ArgumentException(
string.Format("Student with number {0} already added in this course.", student.UniqueNumber));
}
course.Students.Add(student);
}
public void RemoveStudentFromCourse(Student student, Course course)
{
if (student == null)
{
throw new ArgumentNullException("Student cannot be null.");
}
course.Students.Remove(student);
}
public Course RegisterCourse(string name)
{
var course = new Course(name);
if (this.courses.Contains(course))
{
throw new ArgumentException("Course is already added in the school.");
}
this.courses.Add(course);
return course;
}
