System.Xml.XPathNodePointer.MoveToAttribute C# (CSharp) Method

        internal bool MoveToAttribute(string localName, string namespaceURI)
        {
            RealFoliate();
            AssertValid();
            if (namespaceURI == StrReservedXmlns)
                return false;
            if (_node != null)
            {
                //_column.ColumnMapping checkin below is not really needed since the pointer should be pointing at the node before this
                // function should even be called ( there is always a call MoveToOwnerElement() before MoveToAttribute(..)
                if ((_column == null || _column.ColumnMapping == MappingType.Attribute) && _node.NodeType == XmlNodeType.Element)
                {
                    if (!IsFoliated(_node))
                    {
                        DataColumn c = null;
                        while ((c = NextColumn(Row, c, true)) != null)
                        {
                            if (c.EncodedColumnName == localName && c.Namespace == namespaceURI)
                            {
                                MoveTo(_node, c, false);
                                return true;
                            }
                        }
                    }
                    else
                    {
                        Debug.Assert(_node.Attributes != null);
                        XmlNode n = _node.Attributes.GetNamedItem(localName, namespaceURI);
                        if (n != null)
                        {
                            MoveTo(n, null, false);
                            return true;
                        }
                    }
                }
            }
            return false;
        }