public Calisan SelectCalisanById(int CalisanId) { try { Calisan responseEntitiy; using (var repo = new CalisanRepository()) { responseEntitiy = repo.SelectedById(CalisanId); if (responseEntitiy == null) { throw new NullReferenceException("Calisan doesnt exists!"); } } return(responseEntitiy); } catch (Exception ex) { LogHelper.Log(LogTarget.File, ExceptionHelper.ExceptionToString(ex), true); throw new Exception("BusinessLogic:CalisanBusiness::SelectCalisanById::Error occured.", ex); } }