public Object ExecutarOpBD(char _c, Vaga _o) { try { VagaDAO dao = new VagaDAO(); switch (_c) { case 'i': return(dao.InserirBD(_o)); case 'd': return(dao.DeletarBD(_o.Id)); case 'a': return(dao.AlterarBD(_o)); case 'l': return(dao.ListarTodos()); case 'b': return(dao.BuscarPorID(_o.Id)); default: return(null); } } catch (Exception ex) { throw new Exception(ex.Message); } }