XmlAttributeCollection.InsertBefore(XmlAttribute, XmlAttribute) Metod

Definition

Infogar det angivna attributet omedelbart före det angivna referensattributet.

public:
 System::Xml::XmlAttribute ^ InsertBefore(System::Xml::XmlAttribute ^ newNode, System::Xml::XmlAttribute ^ refNode);
public:
 virtual System::Xml::XmlAttribute ^ InsertBefore(System::Xml::XmlAttribute ^ newNode, System::Xml::XmlAttribute ^ refNode);
public System.Xml.XmlAttribute InsertBefore(System.Xml.XmlAttribute newNode, System.Xml.XmlAttribute refNode);
public System.Xml.XmlAttribute InsertBefore(System.Xml.XmlAttribute newNode, System.Xml.XmlAttribute? refNode);
public virtual System.Xml.XmlAttribute InsertBefore(System.Xml.XmlAttribute newNode, System.Xml.XmlAttribute refNode);
member this.InsertBefore : System.Xml.XmlAttribute * System.Xml.XmlAttribute -> System.Xml.XmlAttribute
abstract member InsertBefore : System.Xml.XmlAttribute * System.Xml.XmlAttribute -> System.Xml.XmlAttribute
override this.InsertBefore : System.Xml.XmlAttribute * System.Xml.XmlAttribute -> System.Xml.XmlAttribute
Public Function InsertBefore (newNode As XmlAttribute, refNode As XmlAttribute) As XmlAttribute
Public Overridable Function InsertBefore (newNode As XmlAttribute, refNode As XmlAttribute) As XmlAttribute

Parametrar

newNode
XmlAttribute

Attributet som ska infogas.

refNode
XmlAttribute

Referensattributet. newNode placeras före refNode.

Returer

Infoga XmlAttribute i samlingen.

Undantag

Skapades newNode från ett annat dokument än det som skapade samlingen. Eller så är den refNode inte medlem i den här samlingen.

Exempel

I följande exempel läggs ett nytt attribut till i ett dokument.

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>" +
                "</book>");

    //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");
    Console.WriteLine(doc.OuterXml);
  }
}
Imports System.IO
Imports System.Xml

public class Sample

  public shared sub Main()
  
    Dim doc as XmlDocument = new XmlDocument()
    doc.LoadXml("<book ISBN='1-861001-57-5'>" & _
                "<title>Pride And Prejudice</title>" & _
                "</book>")      

    'Create a new attribute.
    Dim newAttr as XmlAttribute = doc.CreateAttribute("genre")
    newAttr.Value = "novel"

    'Create an attribute collection and add the new attribute
    'to the collection.  
    Dim attrColl as XmlAttributeCollection = doc.DocumentElement.Attributes
    attrColl.InsertBefore(newAttr, attrColl.ItemOf(0))

    Console.WriteLine("Display the modified XML...")
    Console.WriteLine(doc.OuterXml)

  end sub
end class

Kommentarer

Om ett attribut med samma namn redan finns i samlingen tas det ursprungliga attributet bort från samlingen och newNode infogas i samlingen. Om refNode är nullnewNode infogas , i slutet av samlingen.

Den här metoden är ett Microsoft-tillägg till dokumentobjektmodellen (DOM).

Gäller för