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XmlNode.GetPrefixOfNamespace Method

Looks up the closest xmlns declaration for the given namespace URI that is in scope for the current node and returns the prefix defined in that declaration.

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

public virtual string GetPrefixOfNamespace (
	string namespaceURI
)
public String GetPrefixOfNamespace (
	String namespaceURI
)
public function GetPrefixOfNamespace (
	namespaceURI : String
) : String
Not applicable.

Parameters

namespaceURI

Namespace URI whose prefix you want to find.

Return Value

The prefix for the specified namespace URI.

This method is a Microsoft extension to the Document Object Model (DOM).

The following example adds a new element to the XML document.

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'>" +
                "<title>Pride And Prejudice</title>" +
                "</book>");

    XmlNode root = doc.FirstChild;

    //Create a new node.
    string prefix = root.GetPrefixOfNamespace("urn:samples");
    XmlElement elem = doc.CreateElement(prefix, "style", "urn:samples");
    elem.InnerText = "hardcover";

    //Add the node to the document.
    root.AppendChild(elem);

    Console.WriteLine("Display the modified XML...");
    doc.Save(Console.Out);

  }
}

import System.*;
import System.IO.*;
import System.Xml.*;

public class Sample
{
    public static void main(String[] args)
    {
        XmlDocument doc = new XmlDocument();
        doc.LoadXml("<book xmlns:bk='urn:samples' bk:ISBN='1-861001-57-5'>"
            + "<title>Pride And Prejudice</title>"
            + "</book>");

        XmlNode root = doc.get_FirstChild();

        //Create a new node.
        String prefix = root.GetPrefixOfNamespace("urn:samples");
        XmlElement elem = doc.CreateElement(prefix, "style", "urn:samples");
        elem.set_InnerText("hardcover");

        //Add the node to the document.
        root.AppendChild(elem);

        Console.WriteLine("Display the modified XML...");
        doc.Save(Console.get_Out());
    } //main 
} //Sample

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

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