MS.Internal.Xml.XPath.FunctionQuery.MatchNode C# (CSharp) Méthode

        public override XPathNavigator MatchNode(XPathNavigator navigator) {
            if (name != "key" && prefix.Length != 0) {
                throw XPathException.Create(Res.Xp_InvalidPattern);
            }
            this.Evaluate(new XPathSingletonIterator(navigator, /*moved:*/true));
            XPathNavigator nav = null;
            while ((nav = this.Advance()) != null) {
                if (nav.IsSamePosition(navigator)) {
                    return nav;
                }
            }
            return nav;
        }