public bool AddVehicle(Vehicle vehicle) { if (_repositoryVehicle.GetVehicleFromId(vehicle.Id) != null) { return(false); } if (vehicle.LicensePlate != null) { vehicle.LicensePlate = vehicle.LicensePlate.ToUpper(); } try { _repositoryVehicle.Save(vehicle); } catch { return(false); } return((_repositoryVehicle.GetVehicleFromId(vehicle.Id) != null) ? true : false); }