System.Xml.Xsl.Runtime.XmlNavigatorFilter.IsFiltered C# (CSharp) Method

        public abstract bool IsFiltered(XPathNavigator navigator);
    }

        public bool MoveNext()
        {
            switch (_state)
            {
            case IteratorState.HaveCurrent:
                _state = IteratorState.NeedCurrent;
                return(true);

            case IteratorState.NeedCurrent:
                // Move to next following node which matches
                if (!_filter.MoveToFollowing(_navCurrent, _navEnd))
                {
                    // No more nodes unless ending node matches
                    if (_filter.IsFiltered(_navEnd))
                    {
                        _state = IteratorState.NoNext;
                        return(false);
                    }

                    _navCurrent.MoveTo(_navEnd);
                    _state = IteratorState.NoNext;
                }
                return(true);

            case IteratorState.HaveCurrentNoNext:
                _state = IteratorState.NoNext;
                return(true);
            }

            Debug.Assert(_state == IteratorState.NoNext, "Illegal state: " + _state);
            return(false);
        }