XPointer Class (System.Xml.Linq)

XPointer Class

The XPointer class provides an implementation of the XPointer language for locating fragments within an XML document using a set of XPath expressions. This class is part of the System.Xml.Linq namespace and resides in the System.Xml.Linq.dll assembly.

Namespace

System.Xml.Linq

Assembly

System.Xml.Linq.dll

Syntax

public sealed class XPointer

Constructors

Constructor	Summary
`XPointer(string pointer)`	Initializes a new instance of the `XPointer` class using the supplied XPointer expression.

Methods

Method	Returns	Summary
`bool TryResolve(XElement element, out IEnumerable<XNode> nodes)`	bool	Attempts to resolve the XPointer expression against the specified element and returns the matching nodes.
`bool TryResolve(XDocument document, out IEnumerable<XNode> nodes)`	bool	Attempts to resolve the XPointer expression against the specified document.

Properties

Property	Type	Summary
`string Expression`	string	Gets the XPointer expression used to locate nodes.

Examples

// Sample usage of XPointer
using System;
using System.Collections.Generic;
using System.Xml.Linq;
using System.Xml.Linq.XPath;

class Program
{
    static void Main()
    {
        XDocument doc = XDocument.Load("Books.xml");

        // XPointer expression that selects the second book element
        string pointer = "element(/bookstore/book[2])";

        XPointer xptr = new XPointer(pointer);

        if (xptr.TryResolve(doc, out IEnumerable<XNode> nodes))
        {
            foreach (var node in nodes)
            {
                Console.WriteLine(node);
            }
        }
        else
        {
            Console.WriteLine("No nodes matched the XPointer.");
        }
    }
}

Microsoft Docs