/// /// <param name="osoba"></param> /// <param name="trening"></param> /// <param name="service"></param> public string DeleteTrening(Osoba osoba, Trening trening, IDBService service){ string message = ""; undoRedo.InsertInUnDoRedoForDelete(osoba, service, trening, out message); return message; //return service.DeleteTrening(osoba, trening); }