XmlTextReader.GetRemainder Methode
Definition
Wichtig
Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.
Ruft den Rest des gepufferten XML ab.
public:
System::IO::TextReader ^ GetRemainder();public System.IO.TextReader GetRemainder ();member this.GetRemainder : unit -> System.IO.TextReaderPublic Function GetRemainder () As TextReaderGibt zurück
Ein TextReader, der den Rest des gepufferten XML enthält.
Beispiele
Im folgenden Beispiel wird der erste Teil eines XML-Dokuments gelesen und dann verwendet GetRemainder , um das Dokument mithilfe eines zweiten Lesers zu lesen.
#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
Im Beispiel wird die Eingabedatei tworeads.xmlverwendet.
<?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>
Hinweise
Hinweis
Ab dem .NET Framework 2.0 empfehlen wir, Instanzen mithilfe der XmlReader.Create Methode zu erstellenXmlReader, um neue Funktionen zu nutzen.
Da XmlTextReader ein Puffer Readausgeführt wird, muss er den Rest des nicht verwendeten Puffers zurückgeben können, sodass keine Daten verloren gehen. Dadurch können Protokolle (z. B. mehrteilige MIME) XML im gleichen Stream wie andere Dinge verpacken.
Nach dem Aufrufen dieser Methode EOF wird auf true".