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
)

Parameters

namespaceURI
Type: System.String

The namespace URI whose prefix you want to find.

Return Value

Type: System.String
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);

  }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
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