public Predicate <IDataRow> CreateDataRowFilter(string filterExpr) => PpsDataFilterVisitorDataRow.CreateDataRowFilter <IDataRow>(PpsDataFilterExpression.Parse(filterExpr));
} // proc OnCollectionChanged /// <summary></summary> /// <param name="filterExpression"></param> /// <returns></returns> protected sealed override Predicate <object> CreateFilterPredicate(PpsDataFilterExpression filterExpression) => PpsDataFilterVisitorDataRow.CreateDataRowFilter <object>(filterExpression);