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XmlNode.PrependChild Method

Adds the specified node to the beginning of the list of child nodes for this node.

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

public virtual XmlNode PrependChild (
	XmlNode newChild
)
public XmlNode PrependChild (
	XmlNode newChild
)
public function PrependChild (
	newChild : XmlNode
) : XmlNode
Not applicable.

Parameters

newChild

The node to add. All the contents of the node to be added are moved into the specified location.

Return Value

The node added.

Exception typeCondition

InvalidOperationException

This node is of a type that does not allow child nodes of the type of the newChild node.

The newChild is an ancestor of this node.

ArgumentException

The newChild was created from a different document than the one that created this node.

This node is read-only.

If the newChild is already in the tree, it is removed from its original position and added to its target position. For more information about inserting nodes, see Inserting Nodes into an XML Document.

If the node being inserted was created from another document, you can use XmlDocument.ImportNode to import the node to the current document. The imported node can then be inserted into the current document.

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

Notes to Inheritors: When overriding PrependChild in a derived class, in order for events to be raised correctly, you must call the PrependChild method of the base class.

The following example adds a new node 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 genre='novel' ISBN='1-861001-57-5'>" +
                "<title>Pride And Prejudice</title>" +
                "</book>");

    XmlNode root = doc.DocumentElement;

    //Create a new node.
    XmlElement elem = doc.CreateElement("price");
    elem.InnerText="19.95";

    //Add the node to the document.
    root.PrependChild(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 genre='novel' ISBN='1-861001-57-5'>"
            + "<title>Pride And Prejudice</title>"
            + "</book>");

        XmlNode root = doc.get_DocumentElement();

        //Create a new node.
        XmlElement elem = doc.CreateElement("price");
        elem.set_InnerText("19.95");

        //Add the node to the document.
        root.PrependChild(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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