private void EventsExample()
{
PrincipleCabin principle = new PrincipleCabin();
//ClassRoom classRoom = new ClassRoom("1", principle);
//ClassRoom classRoom1 = new ClassRoom("2", principle);
//ClassRoom classRoom2 = new ClassRoom("3", principle);
//ClassRoom classRoom3 = new ClassRoom("4", principle);
principle.RingBell();
}
public ClassRoom(string classname, PrincipleCabin princi)
{
this.roomNumber = classname;
princi.RaiseBell += princi_RaiseBell;
}