void Start()
{
DBCommands.OpenDBConnection();
GPromo.RetrievePromos();
GRoom.RetrieveRooms();
GUser.RetrieveUsers();
GLesson.RetrieveLessons();
}
private void display(DateTime date, Room room, Text text)
{
Lesson lesson = GLesson.GetLesson(room, date);
text.text = lesson.Description + "\n" + lesson.Promo.Specialty + "\n" + lesson.Teacher.Firstname + " " + lesson.Teacher.Lastname;
}
