public Vessel VName(Vessel vessel, IVesselService _vesselService) { if (String.IsNullOrEmpty(vessel.Name) || vessel.Name.Trim() == "") { vessel.Errors.Add("Name", "Tidak boleh kosong"); } else if (_vesselService.IsNameDuplicated(vessel)) { vessel.Errors.Add("Name", "Tidak boleh diduplikasi"); } return(vessel); }