XmlTextReader.GetRemainder Méthode

public:
 System::IO::TextReader ^ GetRemainder();

public System.IO.TextReader GetRemainder ();

member this.GetRemainder : unit -> System.IO.TextReader

Public Function GetRemainder () As TextReader

Retours

TextReader contenant le reste du contenu XML mis en mémoire tampon.

Exemples

L’exemple suivant lit la première partie d’un document XML, puis utilise GetRemainder pour terminer la lecture du document à l’aide d’un deuxième lecteur.

#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
int main()
{
   String^ filename = "tworeads.xml";
   XmlTextReader^ reader = gcnew XmlTextReader( filename );
   reader->WhitespaceHandling = WhitespaceHandling::None;
   
   // Read the first part of the XML document
   while ( reader->Read() )
   {
      
      // Display the elements and stop reading on the book endelement tag
      // then go to ReadPart2 to start another reader to read the rest of the file. 
      switch ( reader->NodeType )
      {
         case XmlNodeType::Element:
            Console::WriteLine( "Name: {0}", reader->Name );
            break;

         case XmlNodeType::Text:
            Console::WriteLine( "  Element Text: {0}", reader->Value );
            break;

         case XmlNodeType::EndElement:
            
            // Stop reading when the reader gets to the end element of the book node.
            if ( "book" == reader->LocalName )
            {
               Console::WriteLine( "End reading first book..." );
               Console::WriteLine();
               goto ReadPart2;
            }
            break;
      }
   }

   
   // Read the rest of the XML document
   
ReadPart2:
   Console::WriteLine( "Begin reading second book..." );
   
   // Create a new reader to read the rest of the document.
   XmlTextReader^ reader2 = gcnew XmlTextReader( reader->GetRemainder() );
   while ( reader2->Read() )
   {
      switch ( reader2->NodeType )
      {
         case XmlNodeType::Element:
            Console::WriteLine( "Name: {0}", reader2->Name );
            break;

         case XmlNodeType::Text:
            Console::WriteLine( "  Element Text: {0}", reader2->Value );
            break;

         case XmlNodeType::EndElement:
            
            // Stop reading when the reader gets to the end element of the book node.
            if ( "book" == reader2->LocalName )
            {
               Console::WriteLine( "End reading second book..." );
               goto Done;
            }
            break;
      }
   }

   
Done:
   Console::WriteLine( "Done." );
   reader->Close();
   reader2->Close();
}

using System;
using System.Xml;

public class Sample {

  private static string filename = "tworeads.xml";

  public static void Main() {

    XmlTextReader reader = new XmlTextReader(filename);
    reader.WhitespaceHandling=WhitespaceHandling.None;

    // Read the first part of the XML document
    while(reader.Read()) {
      // Display the elements and stop reading on the book endelement tag
      // then go to ReadPart2 to start another reader to read the rest of the file.
      switch(reader.NodeType) {
       case XmlNodeType.Element:
        Console.WriteLine("Name: {0}", reader.Name);
        break;
       case XmlNodeType.Text:
        Console.WriteLine("  Element Text: {0}", reader.Value);
        break;
       case XmlNodeType.EndElement:
        // Stop reading when the reader gets to the end element of the book node.
        if ("book"==reader.LocalName) {
          Console.WriteLine("End reading first book...");
          Console.WriteLine();
          goto ReadPart2;
        }
        break;
      }
    }

    // Read the rest of the XML document
    ReadPart2:
    Console.WriteLine("Begin reading second book...");

    // Create a new reader to read the rest of the document.
    XmlTextReader reader2 = new XmlTextReader(reader.GetRemainder());

    while(reader2.Read()) {
      switch (reader2.NodeType) {
        case XmlNodeType.Element:
         Console.WriteLine("Name: {0}", reader2.Name);
         break;
        case XmlNodeType.Text:
         Console.WriteLine("  Element Text: {0}", reader2.Value);
         break;
        case XmlNodeType.EndElement:
         // Stop reading when the reader gets to the end element of the book node.
         if ("book"==reader2.LocalName) {
           Console.WriteLine("End reading second book...");
           goto Done;
         }
         break;
      }
    }

    Done:
    Console.WriteLine("Done.");
    reader.Close();
    reader2.Close();
  }
}//End class

Imports System.Xml

Public Class Sample
    Private Shared filename As String = "tworeads.xml"
    
    Public Shared Sub Main()

        Dim reader As New XmlTextReader(filename)
        reader.WhitespaceHandling = WhitespaceHandling.None
        
        ' Read the first part of the XML document
        While reader.Read()
            ' Display the elements and stop reading on the book endelement tag
            ' then go to ReadPart2 to start another reader to read the rest of the file. 
            Select Case reader.NodeType
                Case XmlNodeType.Element
                    Console.WriteLine("Name: {0}", reader.Name)
                Case XmlNodeType.Text
                    Console.WriteLine("  Element Text: {0}", reader.Value)
                Case XmlNodeType.EndElement
                    ' Stop reading when the reader gets to the end element of the book node.
                    If "book" = reader.LocalName Then
                        Console.WriteLine("End reading first book...")
                        Console.WriteLine()
                        GoTo ReadPart2
                    End If
            End Select
        End While
        
        ' Read the rest of the XML document
        ReadPart2: 
        Console.WriteLine("Begin reading second book...")
        
        ' Create a new reader to read the rest of the document.
        Dim reader2 As New XmlTextReader(reader.GetRemainder())
        
        While reader2.Read()
            Select Case reader2.NodeType
                Case XmlNodeType.Element
                    Console.WriteLine("Name: {0}", reader2.Name)
                Case XmlNodeType.Text
                    Console.WriteLine("  Element Text: {0}", reader2.Value)
                Case XmlNodeType.EndElement
                    'Stop reading when the reader gets to the end element of the book node.
                    If "book" = reader2.LocalName Then
                        Console.WriteLine("End reading second book...")
                        GoTo Done
                    End If
            End Select
        End While
        
        Done: 
        Console.WriteLine("Done.")
        reader.Close()
        reader2.Close()
    End Sub
End Class

L’exemple utilise le fichier tworeads.xmld’entrée .

<?xml version="1.0" ?>
<bookstore>
 <book>
  <title>Pride And Prejudice</title>
  <author>Jane Austen</author>
 </book>
 <book>
  <title>The Handmaid's Tale</title>
  <author>Margaret Atwood</author>
 </book>
</bookstore>

Remarques

Étant donné qu’un XmlTextReader tampon est mis en Readmémoire tampon, il doit être en mesure de retourner le reste de la mémoire tampon inutilisée afin qu’aucune donnée ne soit perdue. Cela permet aux protocoles (tels que MIME en plusieurs parties) d’empaqueter du code XML dans le même flux que d’autres éléments.

Après avoir appelé cette méthode, EOF est défini sur true.

S’applique à

Voir aussi

• XmlReader