XmlNodeReader.MoveToNextAttribute-Methode

Wechselt zum nächsten Attribut.

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

Syntax

'Declaration
Public Overrides Function MoveToNextAttribute As Boolean
'Usage
Dim instance As XmlNodeReader
Dim returnValue As Boolean

returnValue = instance.MoveToNextAttribute

public override bool MoveToNextAttribute ()

public:
virtual bool MoveToNextAttribute () override

public boolean MoveToNextAttribute ()

public override function MoveToNextAttribute () : boolean

Rückgabewert

true, wenn ein nächstes Attribut vorhanden ist; false, wenn keine weiteren Attribute vorhanden sind.

Hinweise

Wenn der aktuelle Knoten kein Attributknoten ist, sind diese Methode und MoveToFirstAttribute äquivalent. Wenn MoveToNextAttributetrue zurückgibt, wechselt der Reader zum nächsten Attribut, andernfalls bleibt die Position des Readers unverändert.

Beispiel

Im folgenden Beispiel wird ein Buch gelesen.

Option Explicit
Option Strict

Imports System
Imports System.IO
Imports System.Xml

Public Class Sample
    
    Public Shared Sub Main()
        Dim reader As XmlNodeReader = Nothing
        
        Try
            'Create and load the XML document.
            Dim doc As New XmlDocument()
            doc.LoadXml("<book genre='novel' ISBN='1-861003-78'> " & _
                       "<title>Pride And Prejudice</title>" & _
                       "<price>19.95</price>" & _
                       "</book>")
            
            'Load the XmlNodeReader 
            reader = New XmlNodeReader(doc)
            
            'Read the attributes on the book element.
            reader.MoveToContent()
            While reader.MoveToNextAttribute()
                Console.WriteLine("{0} = {1}", reader.Name, reader.Value)
            End While
            
            'Move the reader to the title element.
            reader.Read()
            
            'Read the title and price elements.
            Console.WriteLine(reader.ReadElementString())
            Console.WriteLine(reader.ReadElementString())
        
        Finally
            If Not (reader Is Nothing) Then
                reader.Close()
            End If
        End Try
    End Sub 'Main ' End class
End Class 'Sample

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

public class Sample 
{
  public static void Main()
  {
    XmlNodeReader reader = null;

    try
    {
       //Create and load the XML document.
       XmlDocument doc = new XmlDocument();
       doc.LoadXml("<book genre='novel' ISBN='1-861003-78'> " +
                   "<title>Pride And Prejudice</title>" +
                   "<price>19.95</price>" +
                   "</book>"); 

       //Load the XmlNodeReader 
       reader = new XmlNodeReader(doc);
  
       //Read the attributes on the book element.
       reader.MoveToContent();
       while (reader.MoveToNextAttribute())
       {
         Console.WriteLine("{0} = {1}", reader.Name, reader.Value);
       }

       //Move the reader to the title element.
       reader.Read();

       //Read the title and price elements.
       Console.WriteLine(reader.ReadElementString());
       Console.WriteLine(reader.ReadElementString());

     } 

     finally 
     {
        if (reader != null)
          reader.Close();
      }
  }
} // End class

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlNodeReader^ reader = nullptr;
   try
   {
      
      //Create and load the XML document.
      XmlDocument^ doc = gcnew XmlDocument;
      doc->LoadXml( "<book genre='novel' ISBN='1-861003-78'> "
      "<title>Pride And Prejudice</title>"
      "<price>19.95</price>"
      "</book>" );
      
      //Load the XmlNodeReader 
      reader = gcnew XmlNodeReader( doc );
      
      //Read the attributes on the book element.
      reader->MoveToContent();
      while ( reader->MoveToNextAttribute() )
      {
         Console::WriteLine( "{0} = {1}", reader->Name, reader->Value );
      }
      
      //Move the reader to the title element.
      reader->Read();
      
      //Read the title and price elements.
      Console::WriteLine( reader->ReadElementString() );
      Console::WriteLine( reader->ReadElementString() );
   }
   finally
   {
      if ( reader != nullptr )
            reader->Close();
   }

}

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

public class Sample
{
    public static void main(String[] args)
    {
        XmlNodeReader reader = null;
        try {
            //Create and load the XML document.
            XmlDocument doc = new XmlDocument();
            doc.LoadXml("<book genre='novel' ISBN='1-861003-78'> "
                + "<title>Pride And Prejudice</title>"
                + "<price>19.95</price>"
                + "</book>");

            //Load the XmlNodeReader 
            reader = new XmlNodeReader(doc);

            //Read the attributes on the book element.
            reader.MoveToContent();
            while (reader.MoveToNextAttribute()) {
                Console.WriteLine("{0} = {1}", reader.get_Name(), 
                    reader.get_Value());
            }

            //Move the reader to the title element.
            reader.Read();

            //Read the title and price elements.
            Console.WriteLine(reader.ReadElementString());
            Console.WriteLine(reader.ReadElementString());
        } 
        finally {
            if (reader != null) {
                reader.Close();
            }
        }
    } //main
} //End class Sample

Plattformen

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

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

.NET Compact Framework

Unterstützt in: 2.0, 1.0

Siehe auch

Referenz

XmlNodeReader-Klasse
XmlNodeReader-Member
System.Xml-Namespace

Weitere Ressourcen

Lesen von XML mit dem "XmlReader"