public int CntRentsInBuilding(int bId) { int cnt = 0; foreach (Rent r in Rents) { if (bId == Classroom.CId2BId(r.cId)) { ++cnt; } } return(cnt); }
static public Classroom GetClassroom(int id) { Building b = GetBuilding(Classroom.CId2BId(id)); if (null == b) { return(null); } foreach (Classroom c in b.Classrooms) { if (c.cId == id) { return(c); } } return(null); }