XmlAttributeCollection.InsertBefore Method (XmlAttribute, XmlAttribute)


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Inserts the specified attribute immediately before the specified reference attribute.

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

public XmlAttribute InsertBefore(
	XmlAttribute newNode,
	XmlAttribute refNode


Type: System.Xml.XmlAttribute

The XmlAttribute to insert.

Type: System.Xml.XmlAttribute

The XmlAttribute that is the reference attribute. newNode is placed before the refNode.

Return Value

Type: System.Xml.XmlAttribute

The XmlAttribute to insert into the collection.

Exception Condition

The newNode was created from a document different from the one that created this collection. Or the refNode is not a member of this collection.

If an attribute with the same name is already present in the collection, the original attribute is removed from the collection and newNode is inserted into the collection. If refNode is null, newNode is inserted at the end of the collection.

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

The following example adds a new attribute to a document.

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

public class Sample
  public static void Main(){

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

    //Create a new attribute.
    XmlAttribute newAttr = doc.CreateAttribute("genre");
    newAttr.Value = "novel";

    //Create an attribute collection and add the new attribute
    //to the collection.
    XmlAttributeCollection attrColl = doc.DocumentElement.Attributes;
    attrColl.InsertBefore(newAttr, attrColl[0]);

    Console.WriteLine("Display the modified XML...\r\n");

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
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