System.Xml.DocumentXPathNavigator.MoveToFollowing C# (CSharp) Méthode

        public override bool MoveToFollowing(string localName, string namespaceUri, XPathNavigator end) {
            XmlNode pastFollowing = null;
            DocumentXPathNavigator that = end as DocumentXPathNavigator;
            if (that != null) {
                if (document != that.document) {
                    return false;
                }
                switch (that.source.NodeType) {
                    case XmlNodeType.Attribute:
                        that = (DocumentXPathNavigator)that.Clone();
                        if (!that.MoveToNonDescendant()) {
                            return false;
                        }
                        break;
                }
                pastFollowing = that.source;
            }

            XmlNode following = source;
            if (following.NodeType == XmlNodeType.Attribute) {
                following = ((XmlAttribute)following).OwnerElement;
                if (following == null) {
                    return false;
                }
            }
            do {
                XmlNode firstChild = following.FirstChild;
                if (firstChild != null) {
                    following = firstChild;
                }
                else {
                    for (;;) {
                        XmlNode nextSibling = following.NextSibling;
                        if (nextSibling != null) {
                            following = nextSibling;
                            break;
                        }
                        else {
                            XmlNode parent = following.ParentNode;
                            if (parent != null) {
                                following = parent;
                            }
                            else {
                                return false;
                            }
                        }
                    }
                }
                if (following == pastFollowing) { 
                    return false;
                }
            }
            while (following.NodeType != XmlNodeType.Element
                   || following.LocalName != localName
                   || following.NamespaceURI != namespaceUri);

            source = following;
            return true;
        }