XmlWriter.Close Método

Definição

Quando substituído em uma classe derivada, fecha este fluxo e o fluxo subjacente.When overridden in a derived class, closes this stream and the underlying stream.

public:
 virtual void Close();
public:
 abstract void Close();
public virtual void Close ();
public abstract void Close ();
abstract member Close : unit -> unit
override this.Close : unit -> unit
abstract member Close : unit -> unit
Public Overridable Sub Close ()
Public MustOverride Sub Close ()

Exceções

É realizada uma chamada para gravar mais saídas após Close ter sido chamado ou se o resultado dessa chamada for um documento XML inválido.A call is made to write more output after Close has been called or the result of this call is an invalid XML document.

- ou --or-

Um método XmlWriter foi chamado antes do término de uma operação assíncrona anterior.An XmlWriter method was called before a previous asynchronous operation finished. Nesse caso, InvalidOperationException será gerado com a mensagem “Uma operação assíncrona já está em andamento”.In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."

Exemplos

O exemplo a seguir grava um nó XML.The following example writes an XML node.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   
   // Create a writer to write XML to the console.
   XmlWriterSettings^ settings = gcnew XmlWriterSettings;
   settings->Indent = true;
   settings->OmitXmlDeclaration = true;
   XmlWriter^ writer = XmlWriter::Create( Console::Out, settings );
   
   // Write the book element.
   writer->WriteStartElement( L"book" );
   
   // Write the title element.
   writer->WriteStartElement( L"title" );
   writer->WriteString( L"Pride And Prejudice" );
   writer->WriteEndElement();
   
   // Write the close tag for the root element.
   writer->WriteEndElement();
   
   // Write the XML and close the writer.
   writer->Close();
   return 1;
}

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

public class Sample {

  public static void Main() {

     // Create a writer to write XML to the console.
     XmlWriterSettings settings = new XmlWriterSettings();
     settings.Indent = true;
     settings.OmitXmlDeclaration = true;
     XmlWriter writer = XmlWriter.Create(Console.Out, settings);

     // Write the book element.
     writer.WriteStartElement("book");

     // Write the title element.
     writer.WriteStartElement("title");
     writer.WriteString("Pride And Prejudice");
     writer.WriteEndElement();

     // Write the close tag for the root element.
     writer.WriteEndElement();

     // Write the XML and close the writer.
     writer.Close();
  }
}
Option Explicit
Option Strict

Imports System.IO
Imports System.Xml

Public Class Sample
    
  Public Shared Sub Main()

     ' Create a writer to write XML to the console.
     Dim settings As XmlWriterSettings = new XmlWriterSettings()
     settings.Indent = true
     settings.OmitXmlDeclaration = true
     Dim writer As XmlWriter = XmlWriter.Create(Console.Out, settings)

     ' Write the book element.
     writer.WriteStartElement("book")
        
     ' Write the title element.
     writer.WriteStartElement("title")
     writer.WriteString("Pride And Prejudice")
     writer.WriteEndElement()
        
     ' Write the close tag for the root element.
     writer.WriteEndElement()
        
     ' Write the XML and close the writer.
     writer.Close()

  End Sub
End Class

Comentários

Todos os elementos ou atributos deixados abertos são fechados automaticamente.Any elements or attributes left open are automatically closed.

Observação

Quando você usa os XmlWriter métodos para gerar XML de saída, os elementos e atributos não serão gravados até que você chame o Close método.When you use the XmlWriter methods to output XML, the elements and attributes will not be written until you call the Close method. Por exemplo, se você estiver usando o XmlWriter para popular um XmlDocument , até fechar o XmlWriter , não será possível observar os elementos e atributos escritos no documento de destino.For example, if you are using the XmlWriter to populate an XmlDocument, until you close the XmlWriter, you will not be able to observe the written elements and attributes in the target document.

Aplica-se a