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

        internal bool MoveToFirstNamespace(XPathNamespaceScope namespaceScope)
        {
            RealFoliate();
            _parentOfNS = _node as XmlBoundElement;
            //only need to check with _node, even if _column is not null and its mapping type is element, it can't have attributes
            if (_parentOfNS == null)
                return false;
            XmlNode node = _node;
            XmlBoundElement be = null;
            while (node != null)
            {
                be = node as XmlBoundElement;
                if (MoveToNextNamespace(be, null, null))
                    return true;
                //didn't find it
                if (namespaceScope == XPathNamespaceScope.Local)
                    goto labelNoNS;
                //try the next element anccestor.
                do
                {
                    node = node.ParentNode;
                } while (node != null && node.NodeType != XmlNodeType.Element);
            }
            if (namespaceScope == XPathNamespaceScope.All)
            {
                MoveTo(_doc._attrXml, null, false);
                return true;
            }
        labelNoNS:
            //didn't find one namespace node
            _parentOfNS = null;
            return false;
        }