public List <TripPoint> AddTripToTourist(List <TripPoint> tripPoints) { DBservices db = new DBservices(); db.DeleteLastTripTourist(tripPoints[0].TouristEmail); if (tripPoints.Count > 0) { for (int i = 0; i < tripPoints.Count; i++) { db.AddPointToSQL(tripPoints[i]); } } if (db.GetAllPointsOfTourist(tripPoints[0].TouristEmail) == null) { return(null); } else { return(db.GetAllPointsOfTourist(tripPoints[0].TouristEmail)); } }