private static XmlNodeList SelectAllAttributes(XmlNode parentNode)
        {
            XmlAttributeCollection attributes = parentNode.Attributes;

            if (attributes.Count == 0)
            {
                OnNoMatchingNode("@*");
                return(null);
            }
            else if (attributes.Count == 1)
            {
                XmlPatchNodeList nodeList = new SingleNodeList();
                nodeList.AddNode(attributes.Item(0));
                return(nodeList);
            }
            else
            {
                IEnumerator      enumerator = attributes.GetEnumerator();
                XmlPatchNodeList nodeList   = new MultiNodeList();
                while (enumerator.MoveNext())
                {
                    nodeList.AddNode((XmlNode)enumerator.Current);
                }
                return(nodeList);
            }
        }
        private static XmlNodeList SelectAllChildren(XmlNode parentNode)
        {
            XmlNodeList children = parentNode.ChildNodes;

            if (children.Count == 0)
            {
                OnNoMatchingNode("*");
                return(null);
            }
            else if (children.Count == 1)
            {
                XmlPatchNodeList nodeList = new SingleNodeList();
                nodeList.AddNode(children.Item(0));
                return(nodeList);
            }
            else
            {
                IEnumerator      enumerator = children.GetEnumerator();
                XmlPatchNodeList nodeList   = new MultiNodeList();
                while (enumerator.MoveNext())
                {
                    nodeList.AddNode((XmlNode)enumerator.Current);
                }
                return(nodeList);
            }
        }
        private static XmlNodeList SelectAllChildren( XmlNode parentNode )
        {
            XmlNodeList children = parentNode.ChildNodes;

            if ( children.Count == 0 )
            {
                OnNoMatchingNode( "*" );
                return null;
            }
            else if ( children.Count == 1 )
            {
                XmlPatchNodeList nodeList = new SingleNodeList();
                nodeList.AddNode( children.Item( 0 ) );
                return nodeList;
            }
            else
            {
                IEnumerator enumerator = children.GetEnumerator();
                XmlPatchNodeList nodeList = new MultiNodeList();
                while ( enumerator.MoveNext() )
                    nodeList.AddNode( (XmlNode) enumerator.Current );
                return nodeList;
            }
        }
        private static XmlNodeList SelectAllAttributes( XmlNode parentNode )
        {
            XmlAttributeCollection attributes = parentNode.Attributes;

            if ( attributes.Count == 0 )
            {
                OnNoMatchingNode( "@*" );
                return null;
            }
            else if ( attributes.Count == 1 )
            {
                XmlPatchNodeList nodeList = new SingleNodeList();
                nodeList.AddNode( attributes.Item( 0 ) );
                return nodeList;
            }
            else
            {
                IEnumerator enumerator = attributes.GetEnumerator();
                XmlPatchNodeList nodeList = new MultiNodeList();
                while ( enumerator.MoveNext() )
                    nodeList.AddNode( (XmlNode) enumerator.Current );
                return nodeList;
            }
        }