Evaluate()

int System.Data.Select.Evaluate ( int record )

inlineprivate

Definition at line 678 of file Select.cs.

    {
        DataRow dataRow = _table._recordManager[record];
        if (dataRow == null)
        {
            return 0;
        }
        DataRowVersion version = DataRowVersion.Default;
        if (dataRow._oldRecord == record)
        {
            version = DataRowVersion.Original;
        }
        else if (dataRow._newRecord == record)
        {
            version = DataRowVersion.Current;
        }
        else if (dataRow._tempRecord == record)
        {
            version = DataRowVersion.Proposed;
        }
        IndexField[] indexFields = _index._indexFields;
        for (int i = 0; i < _matchedCandidates; i++)
        {
            ColumnInfo columnInfo = _candidateColumns[indexFields[i].Column.Ordinal];
            int num = Eval(columnInfo.expr, dataRow, version);
            if (num != 0)
            {
                if (!indexFields[i].IsDescending)
                {
                    return num;
                }
                return -num;
            }
        }
        return 0;
    }

References System.Data.Select._candidateColumns, System.Data.Select._index, System.Data.Index._indexFields, System.Data.Select._matchedCandidates, System.Data.DataTable._recordManager, System.Data.Select._table, and System.Data.Select.Eval().

Referenced by System.Data.Select.FindFirstMatchingRecord(), and System.Data.Select.FindLastMatchingRecord().