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; }