MoveToPreviousSibling()

bool System.Xml.XPathNodePointer.MoveToPreviousSibling ( )

inlinepackage

Definition at line 771 of file XPathNodePointer.cs.

    {
        RealFoliate();
        if (_node != null)
        {
            if (_column != null)
            {
                if (_fOnValue)
                {
                    return false;
                }
                DataRow row = Row;
                for (DataColumn dataColumn = PreviousColumn(row, _column, fAttribute: false); dataColumn != null; dataColumn = PreviousColumn(row, dataColumn, fAttribute: false))
                {
                    if (IsValidChild(_node, dataColumn))
                    {
                        MoveTo(_node, dataColumn, _doc.IsTextOnly(dataColumn));
                        return true;
                    }
                }
            }
            else
            {
                XmlNode xmlNode = _node;
                XmlNode parentNode = _node.ParentNode;
                if (parentNode == null)
                {
                    return false;
                }
                bool flag = XmlDataDocument.IsTextNode(_node.NodeType);
                do
                {
                    xmlNode = _doc.SafePreviousSibling(xmlNode);
                }
                while ((xmlNode != null && flag && XmlDataDocument.IsTextNode(xmlNode.NodeType)) || (xmlNode != null && !IsValidChild(parentNode, xmlNode)));
                if (xmlNode != null)
                {
                    MoveTo(xmlNode);
                    return true;
                }
                if (!IsFoliated(parentNode) && parentNode is XmlBoundElement)
                {
                    DataRow row2 = ((XmlBoundElement)parentNode).Row;
                    if (row2 != null)
                    {
                        DataColumn dataColumn2 = PreviousColumn(row2, null, fAttribute: false);
                        if (dataColumn2 != null)
                        {
                            MoveTo(parentNode, dataColumn2, _doc.IsTextOnly(dataColumn2));
                            return true;
                        }
                    }
                }
            }
        }
        return false;
    }

References System.Xml.XmlDataDocument.IsTextNode(), System.Xml.XmlNode.NodeType, and System.Xml.XmlNode.ParentNode.

Referenced by System.Xml.DataDocumentXPathNavigator.MoveToPrevious().