//activar pausar public int?ActivarPausarContacto(int id_contacto, int id_activo) { int?regAfec; using (DataAccessLayer dal = new DataAccessLayer()) { var connection = dal.AbrirConexion(); SqlTransaction transaction = connection.BeginTransaction(); try { regAfec = dal.ActivarPausarContacto(transaction, connection, id_contacto, id_activo); transaction.Commit(); return(regAfec); } catch (Exception e) { transaction.Rollback(); return(null); } finally { transaction.Dispose(); } } }