XmlNodeReader.MoveToFirstAttribute Metode

Definisi

Ruang nama:

System.Xml

Rakitan:

System.Xml.ReaderWriter.dll

Sumber:

XmlNodeReader.cs

Berpindah ke atribut pertama.

public:
 override bool MoveToFirstAttribute();

public override bool MoveToFirstAttribute ();

override this.MoveToFirstAttribute : unit -> bool

Public Overrides Function MoveToFirstAttribute () As Boolean

Mengembalikan

Boolean

true jika ada atribut (pembaca berpindah ke atribut pertama); jika tidak, false (posisi pembaca tidak berubah).

Contoh

Contoh berikut mendapatkan nilai atribut pertama dari simpul akar.

#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' publicationdate='1987'></book>" );
      
      //Load the XmlNodeReader 
      reader = gcnew XmlNodeReader( doc );
      
      //Read the genre attribute.
      reader->MoveToContent();
      reader->MoveToFirstAttribute();
      String^ genre = reader->Value;
      Console::WriteLine( "The genre value: {0}", genre );
   }
   finally
   {
      if ( reader != nullptr )
            reader->Close();
   }

}

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' publicationdate='1987'> " +
                   "</book>");

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

       //Read the genre attribute.
       reader.MoveToContent();
       reader.MoveToFirstAttribute();
       string genre=reader.Value;
       Console.WriteLine("The genre value: " + genre);
     }
     finally
     {
        if (reader != null)
          reader.Close();
      }
  }
} // End class

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' publicationdate='1987'> " & _
                        "</book>")
            
            'Load the XmlNodeReader 
            reader = New XmlNodeReader(doc)
            
            'Read the genre attribute.
            reader.MoveToContent()
            reader.MoveToFirstAttribute()
            Dim genre As String = reader.Value
            Console.WriteLine("The genre value: " & genre)
        
        Finally
            If Not (reader Is Nothing) Then
                reader.Close()
            End If
        End Try
    End Sub
End Class

Keterangan

Catatan

Dalam .NET Framework 2.0, praktik yang disarankan adalah membuat XmlReader instans menggunakan XmlReaderSettings kelas dan Create metode . Ini memungkinkan Anda untuk memanfaatkan sepenuhnya semua fitur baru yang diperkenalkan di .NET FrameworkUntuk informasi selengkapnya, lihat bagian Keterangan di XmlReader halaman referensi.