XmlElement.Prefix Property


The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience.

Gets or sets the namespace prefix of this node.

Namespace:   System.Xml
Assembly:  System.Xml (in System.Xml.dll)

public override string Prefix { get; set; }

Property Value

Type: System.String

The namespace prefix of this node. If there is no prefix, this property returns String.Empty.

Exception Condition

This node is read-only


The specified prefix contains an invalid character.

The specified prefix is malformed.

The namespaceURI of this node is null.

The specified prefix is "xml" and the namespaceURI of this node is different from http://www.w3.org/XML/1998/namespace.

Setting this property changes the Name property, which holds the qualified name for an XmlElement. However, changing the prefix does not change the namespace URI of the element.

The following example displays information on the ISBN element.

using System;
using System.IO;
using System.Xml;

public class Sample
  public static void Main()

    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<book xmlns:bk='urn:samples'>" +
                "<bk:ISBN>1-861001-57-5</bk:ISBN>" +
                "<title>Pride And Prejudice</title>" +

    // Display information on the ISBN element.
    XmlElement elem = (XmlElement) doc.DocumentElement.FirstChild;
    Console.Write("{0}:{1} = {2}", elem.Prefix, elem.LocalName, elem.InnerText);
    Console.WriteLine("\t namespaceURI=" + elem.NamespaceURI);


Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Return to top