public void Delete(PositionObstacle unePositionObstacle)
 {
     _DBAL.Delete(" PositionObstacle WHERE idPositionObstacle = '" + unePositionObstacle.IdPositionObstacle + "' ;");
 }
 public void Delete(Reservation uneReservation)
 {
     _DBAL.Delete(" Reservation WHERE idReservation = " + uneReservation.IdReservation + ";");
 }
 public void Delete(Obstacle unObstacle) //supprimer une ligne
 {
     _DBAL.Delete("Obstacle WHERE nom = '" + unObstacle.NomObstacle + "' ;");
 }