private void DisplayInfoAboutLesson(Lesson LessonToDisplay)
{
cb_year.SelectedIndex = LessonToDisplay.YearIndex;
cb_homework.Text = Convert.ToString(LessonToDisplay.homeworkAmount);
cb_room.SelectedIndex = currentTT.GetIndexOfRoom(LessonToDisplay.RoomCode);
cb_subject.SelectedIndex = currentTT.GetIndexOfSubject(LessonToDisplay.SubjectAbbreviation);
cb_teacher.SelectedIndex = currentTT.GetIndexOfStaff(LessonToDisplay.TeacherAbbreviation);
cb_form.SelectedIndex = LessonToDisplay.FormIndex;
btn_invisible.Checked = LessonToDisplay.invisible;
btn_locked.Checked = LessonToDisplay.locked;
}