System.Xml.DocumentXPathNodeIterator_AllElemChildren_AndSelf.MoveNext C# (CSharp) Method

        public override bool MoveNext() {
            if( CurrentPosition == 0 ) {
                DocumentXPathNavigator nav = (DocumentXPathNavigator)this.Current;
                XmlNode node = (XmlNode)nav.UnderlyingObject;
                if ( node.NodeType == XmlNodeType.Element && Match( node ) ) {
                    SetPosition( 1 );
                    return true;
                }
            }
            return base.MoveNext();
        }
    }