PreviousColumn()

DataColumn System.Xml.XPathNodePointer.PreviousColumn ( DataRow row, DataColumn col, bool fAttribute )

inlinepackage

Definition at line 573 of file XPathNodePointer.cs.

    {
        if (row.RowState == DataRowState.Deleted)
        {
            return null;
        }
        DataTable table = row.Table;
        DataColumnCollection columns = table.Columns;
        int num = ((col != null) ? (col.Ordinal - 1) : (columns.Count - 1));
        DataRowVersion version = ((row.RowState == DataRowState.Detached) ? DataRowVersion.Proposed : DataRowVersion.Current);
        while (num >= 0)
        {
            DataColumn dataColumn = columns[num];
            if (!_doc.IsNotMapped(dataColumn) && dataColumn.ColumnMapping == MappingType.Attribute == fAttribute && !Convert.IsDBNull(row[dataColumn, version]))
            {
                return dataColumn;
            }
            num--;
        }
        return null;
    }

References System.Xml.XPathNodePointer._doc, System.Data.DataTable.Columns, System.Xml.Dictionary, System.Convert.IsDBNull(), and System.Xml.XmlDataDocument.IsNotMapped().