System.Xml.XPath.XPathNavigator.MoveToFirstNamespace C# (CSharp) Method

        public bool MoveToFirstNamespace() { return MoveToFirstNamespace(XPathNamespaceScope.All); }

        /// <summary>
        /// Copy the navigator subtree to the raw writer.
        /// </summary>
        private void CopyNode(XPathNavigator nav) {
            XPathNodeType nodeType;
            int iLevel = 0;

            while (true) {
                if (CopyShallowNode(nav)) {
                    nodeType = nav.NodeType;
                    if (nodeType == XPathNodeType.Element) {
                        // Copy attributes
                        if (nav.MoveToFirstAttribute()) {
                            do {
                                CopyShallowNode(nav);
                            }
                            while (nav.MoveToNextAttribute());
                            nav.MoveToParent();
                        }

                        // Copy namespaces in document order (navigator returns them in reverse document order)
                        XPathNamespaceScope nsScope = (iLevel == 0) ? XPathNamespaceScope.ExcludeXml : XPathNamespaceScope.Local;
                        if (nav.MoveToFirstNamespace(nsScope)) {
                            CopyNamespaces(nav, nsScope);
                            nav.MoveToParent();
                        }

                        this.xwrt.StartElementContent();
                    }

                    // If children exist, move down to next level
                    if (nav.MoveToFirstChild()) {
                        iLevel++;
                        continue;
                    }
                    else {
                        // EndElement
                        if (nav.NodeType == XPathNodeType.Element)
                            this.xwrt.WriteEndElement(nav.Prefix, nav.LocalName, nav.NamespaceURI);
                    }
                }

                // No children
                while (true) {
                    if (iLevel == 0) {
                        // The entire subtree has been copied
                        return;
                    }

                    if (nav.MoveToNext()) {
                        // Found a sibling, so break to outer loop
                        break;
                    }

                    // No siblings, so move up to previous level
                    iLevel--;
                    nav.MoveToParent();

                    // EndElement
                    if (nav.NodeType == XPathNodeType.Element)
                        this.xwrt.WriteFullEndElement(nav.Prefix, nav.LocalName, nav.NamespaceURI);
                }
            }
        }