XmlWriter.WriteElementString Methode

Referenz

Definition

Namespace:: System.Xml

Assembly:: System.Xml.ReaderWriter.dll

Assembly:: System.Xml.dll

Assembly:: netstandard.dll

Wichtig

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Schreibt ein Element, das einen Zeichenfolgenwert enthält.

Überlädt

WriteElementString(String, String)	Schreibt ein Element mit dem angegebenen lokalen Namen und Wert.
WriteElementString(String, String, String)	Schreibt ein Element mit dem angegebenen lokalen Namen, Namespace-URI und Wert.
WriteElementString(String, String, String, String)	Schreibt ein Element mit dem angegebenen Präfix, lokalen Namen, Namespace-URI und Wert.

Hinweise

Die asynchrone Version dieser Methode finden Sie unter WriteElementStringAsync.

WriteElementString(String, String)

Source:: XmlWriter.cs

Source:: XmlWriter.cs

Source:: XmlWriter.cs

Schreibt ein Element mit dem angegebenen lokalen Namen und Wert.

public:
 void WriteElementString(System::String ^ localName, System::String ^ value);

public void WriteElementString (string localName, string value);

public void WriteElementString (string localName, string? value);

member this.WriteElementString : string * string -> unit

Public Sub WriteElementString (localName As String, value As String)

Parameter

localName: String

Der lokale Name des Elements.

value: String

Der Wert des Elements.

Ausnahmen

ArgumentException

Der localName-Wert ist null oder eine leere Zeichenfolge.

- oder -

Die Parameterwerte sind nicht gültig.

EncoderFallbackException

Es gibt ein Zeichen im Puffer, das ein gültiges XML-Zeichen ist, aber nicht gültig für die Ausgabecodierung ist. Wenn die Ausgabecodierung z. B. ASCII ist, sollten Sie nur Zeichen im Bereich von 0 bis 127 für Element- und Attributnamen verwenden. Das ungültige Zeichen kann sich im Argument dieser Methode oder in einem Argument von vorherigen Methoden befinden, die in den Puffer geschrieben haben. Solche Zeichen werden wenn möglich von Zeichenentitätsverweisen maskiert (z. B., in Textknoten oder Attributwerten). Der Zeichenentitätsverweis ist jedoch nicht in Element- und Attributnamen, Kommentaren, Verarbeitungsanweisungen oder CDATA-Abschnitten zugelassen.

InvalidOperationException

Eine XmlWriter-Methode wurde aufgerufen, bevor ein vorheriger asynchroner Vorgang abgeschlossen wurde. In diesem Fall wird InvalidOperationException mit der Meldung „Es wird bereits ein asynchroner Vorgang ausgeführt“ ausgelöst.

Beispiele

Im folgenden Beispiel werden mehrere Schreibmethoden verwendet, um ein XML-Fragment zu erstellen.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
public ref class Sample
{
private:
   static String^ m_Document = L"sampledata.xml";

public:
   static void Main()
   {
      XmlWriter^ writer = nullptr;
      try
      {
         XmlWriterSettings^ settings = gcnew XmlWriterSettings;
         settings->Indent = true;
         writer = XmlWriter::Create( m_Document,settings );
         writer->WriteComment( L"sample XML fragment" );
         
         // Write an element (this one is the root).
         writer->WriteStartElement( L"book" );
         
         // Write the namespace declaration.
         writer->WriteAttributeString( L"xmlns", L"bk", nullptr, L"urn:samples" );
         
         // Write the genre attribute.
         writer->WriteAttributeString( L"genre", L"novel" );
         
         // Write the title.
         writer->WriteStartElement( L"title" );
         writer->WriteString( L"The Handmaid's Tale" );
         writer->WriteEndElement();
         
         // Write the price.
         writer->WriteElementString( L"price", L"19.95" );
         
         // Lookup the prefix and write the ISBN element.
         String^ prefix = writer->LookupPrefix( L"urn:samples" );
         writer->WriteStartElement( prefix, L"ISBN", L"urn:samples" );
         writer->WriteString( L"1-861003-78" );
         writer->WriteEndElement();
         
         // Write the style element (shows a different way to handle prefixes).
         writer->WriteElementString( L"style", L"urn:samples", L"hardcover" );
         
         // Write the close tag for the root element.
         writer->WriteEndElement();
         
         // Write the XML to file and close the writer.
         writer->Flush();
         writer->Close();
      }
      finally
      {
         if ( writer != nullptr )
                  writer->Close();
      }

   }

};

void main()
{
   Sample::Main();
}

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

 public class Sample
 {
   private const string m_Document = "sampledata.xml";

   public static void Main() {

      XmlWriter writer = null;

      try {

        XmlWriterSettings settings = new XmlWriterSettings();
        settings.Indent = true;
        writer = XmlWriter.Create (m_Document, settings);

        writer.WriteComment("sample XML fragment");

        // Write an element (this one is the root).
        writer.WriteStartElement("book");

        // Write the namespace declaration.
        writer.WriteAttributeString("xmlns", "bk", null, "urn:samples");

        // Write the genre attribute.
        writer.WriteAttributeString("genre", "novel");

        // Write the title.
        writer.WriteStartElement("title");
        writer.WriteString("The Handmaid's Tale");
        writer.WriteEndElement();

        // Write the price.
        writer.WriteElementString("price", "19.95");

        // Lookup the prefix and write the ISBN element.
        string prefix = writer.LookupPrefix("urn:samples");
        writer.WriteStartElement(prefix, "ISBN", "urn:samples");
        writer.WriteString("1-861003-78");
        writer.WriteEndElement();

        // Write the style element (shows a different way to handle prefixes).
        writer.WriteElementString("style", "urn:samples", "hardcover");

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

        // Write the XML to file and close the writer.
        writer.Flush();
        writer.Close();
      }

      finally {
        if (writer != null)
           writer.Close();
     }
   }
 }

Option Strict
Option Explicit

Imports System.IO
Imports System.Xml

Public Class Sample
    Private Shared m_Document As String = "sampledata.xml"
    
    Public Shared Sub Main()
        Dim writer As XmlWriter = Nothing
        
      Try

        Dim settings As XmlWriterSettings = new XmlWriterSettings()
        settings.Indent = true
        writer = XmlWriter.Create (m_Document, settings)
            
        writer.WriteComment("sample XML fragment")
            
        ' Write an element (this one is the root).
        writer.WriteStartElement("book")
            
        ' Write the namespace declaration.
        writer.WriteAttributeString("xmlns", "bk", Nothing, "urn:samples")
            
        ' Write the genre attribute.
        writer.WriteAttributeString("genre", "novel")
            
        ' Write the title.
        writer.WriteStartElement("title")
        writer.WriteString("The Handmaid's Tale")
        writer.WriteEndElement()
            
        ' Write the price.
        writer.WriteElementString("price", "19.95")
            
        ' Lookup the prefix and write the ISBN element.
        Dim prefix As String = writer.LookupPrefix("urn:samples")
        writer.WriteStartElement(prefix, "ISBN", "urn:samples")
        writer.WriteString("1-861003-78")
        writer.WriteEndElement()
            
        ' Write the style element (shows a different way to handle prefixes).
        writer.WriteElementString("style", "urn:samples", "hardcover")
            
        ' Write the close tag for the root element.
        writer.WriteEndElement()
            
        ' Write the XML to file and close the writer.
        writer.Flush()
        writer.Close()
        
        Finally
            If Not (writer Is Nothing) Then
                writer.Close()
            End If
        End Try

    End Sub
End Class

Hinweise

Die asynchrone Version dieser Methode finden Sie unter WriteElementStringAsync.

Gilt für:

WriteElementString(String, String, String)

Source:: XmlWriter.cs

Source:: XmlWriter.cs

Source:: XmlWriter.cs

Schreibt ein Element mit dem angegebenen lokalen Namen, Namespace-URI und Wert.

public:
 void WriteElementString(System::String ^ localName, System::String ^ ns, System::String ^ value);

public void WriteElementString (string localName, string ns, string value);

public void WriteElementString (string localName, string? ns, string? value);

member this.WriteElementString : string * string * string -> unit

Public Sub WriteElementString (localName As String, ns As String, value As String)

Parameter

localName: String

Der lokale Name des Elements.

ns: String

Der Namespace-URI, der dem Element zugeordnet werden soll.

value: String

Der Wert des Elements.

Ausnahmen

ArgumentException

Der localName-Wert ist null oder eine leere Zeichenfolge.

- oder -

Die Parameterwerte sind nicht gültig.

EncoderFallbackException

InvalidOperationException

Beispiele

Im folgenden Beispiel werden mehrere Schreibmethoden verwendet, um ein XML-Fragment zu erstellen.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
public ref class Sample
{
private:
   static String^ m_Document = L"sampledata.xml";

public:
   static void Main()
   {
      XmlWriter^ writer = nullptr;
      try
      {
         XmlWriterSettings^ settings = gcnew XmlWriterSettings;
         settings->Indent = true;
         writer = XmlWriter::Create( m_Document,settings );
         writer->WriteComment( L"sample XML fragment" );
         
         // Write an element (this one is the root).
         writer->WriteStartElement( L"book" );
         
         // Write the namespace declaration.
         writer->WriteAttributeString( L"xmlns", L"bk", nullptr, L"urn:samples" );
         
         // Write the genre attribute.
         writer->WriteAttributeString( L"genre", L"novel" );
         
         // Write the title.
         writer->WriteStartElement( L"title" );
         writer->WriteString( L"The Handmaid's Tale" );
         writer->WriteEndElement();
         
         // Write the price.
         writer->WriteElementString( L"price", L"19.95" );
         
         // Lookup the prefix and write the ISBN element.
         String^ prefix = writer->LookupPrefix( L"urn:samples" );
         writer->WriteStartElement( prefix, L"ISBN", L"urn:samples" );
         writer->WriteString( L"1-861003-78" );
         writer->WriteEndElement();
         
         // Write the style element (shows a different way to handle prefixes).
         writer->WriteElementString( L"style", L"urn:samples", L"hardcover" );
         
         // Write the close tag for the root element.
         writer->WriteEndElement();
         
         // Write the XML to file and close the writer.
         writer->Flush();
         writer->Close();
      }
      finally
      {
         if ( writer != nullptr )
                  writer->Close();
      }

   }

};

void main()
{
   Sample::Main();
}

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

 public class Sample
 {
   private const string m_Document = "sampledata.xml";

   public static void Main() {

      XmlWriter writer = null;

      try {

        XmlWriterSettings settings = new XmlWriterSettings();
        settings.Indent = true;
        writer = XmlWriter.Create (m_Document, settings);

        writer.WriteComment("sample XML fragment");

        // Write an element (this one is the root).
        writer.WriteStartElement("book");

        // Write the namespace declaration.
        writer.WriteAttributeString("xmlns", "bk", null, "urn:samples");

        // Write the genre attribute.
        writer.WriteAttributeString("genre", "novel");

        // Write the title.
        writer.WriteStartElement("title");
        writer.WriteString("The Handmaid's Tale");
        writer.WriteEndElement();

        // Write the price.
        writer.WriteElementString("price", "19.95");

        // Lookup the prefix and write the ISBN element.
        string prefix = writer.LookupPrefix("urn:samples");
        writer.WriteStartElement(prefix, "ISBN", "urn:samples");
        writer.WriteString("1-861003-78");
        writer.WriteEndElement();

        // Write the style element (shows a different way to handle prefixes).
        writer.WriteElementString("style", "urn:samples", "hardcover");

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

        // Write the XML to file and close the writer.
        writer.Flush();
        writer.Close();
      }

      finally {
        if (writer != null)
           writer.Close();
     }
   }
 }

Option Strict
Option Explicit

Imports System.IO
Imports System.Xml

Public Class Sample
    Private Shared m_Document As String = "sampledata.xml"
    
    Public Shared Sub Main()
        Dim writer As XmlWriter = Nothing
        
      Try

        Dim settings As XmlWriterSettings = new XmlWriterSettings()
        settings.Indent = true
        writer = XmlWriter.Create (m_Document, settings)
            
        writer.WriteComment("sample XML fragment")
            
        ' Write an element (this one is the root).
        writer.WriteStartElement("book")
            
        ' Write the namespace declaration.
        writer.WriteAttributeString("xmlns", "bk", Nothing, "urn:samples")
            
        ' Write the genre attribute.
        writer.WriteAttributeString("genre", "novel")
            
        ' Write the title.
        writer.WriteStartElement("title")
        writer.WriteString("The Handmaid's Tale")
        writer.WriteEndElement()
            
        ' Write the price.
        writer.WriteElementString("price", "19.95")
            
        ' Lookup the prefix and write the ISBN element.
        Dim prefix As String = writer.LookupPrefix("urn:samples")
        writer.WriteStartElement(prefix, "ISBN", "urn:samples")
        writer.WriteString("1-861003-78")
        writer.WriteEndElement()
            
        ' Write the style element (shows a different way to handle prefixes).
        writer.WriteElementString("style", "urn:samples", "hardcover")
            
        ' Write the close tag for the root element.
        writer.WriteEndElement()
            
        ' Write the XML to file and close the writer.
        writer.Flush()
        writer.Close()
        
        Finally
            If Not (writer Is Nothing) Then
                writer.Close()
            End If
        End Try

    End Sub
End Class

Hinweise

Die asynchrone Version dieser Methode finden Sie unter WriteElementStringAsync.

Gilt für:

WriteElementString(String, String, String, String)

Source:: XmlWriter.cs

Source:: XmlWriter.cs

Source:: XmlWriter.cs

Schreibt ein Element mit dem angegebenen Präfix, lokalen Namen, Namespace-URI und Wert.

public:
 void WriteElementString(System::String ^ prefix, System::String ^ localName, System::String ^ ns, System::String ^ value);

public void WriteElementString (string prefix, string localName, string ns, string value);

public void WriteElementString (string? prefix, string localName, string? ns, string? value);

member this.WriteElementString : string * string * string * string -> unit

Public Sub WriteElementString (prefix As String, localName As String, ns As String, value As String)

Parameter

prefix: String

Das Präfix des Elements.

localName: String

Der lokale Name des Elements.

ns: String

Der Namespace-URI des Elements.

value: String

Der Wert des Elements.

Ausnahmen

ArgumentException

Der localName-Wert ist null oder eine leere Zeichenfolge.

- oder -

Die Parameterwerte sind nicht gültig.

EncoderFallbackException

InvalidOperationException

Hinweise

Die asynchrone Version dieser Methode finden Sie unter WriteElementStringAsync.

Gilt für:

XmlWriter.WriteElementString Methode

Definition

Überlädt

Hinweise

WriteElementString(String, String)

Parameter

Ausnahmen

Beispiele

Hinweise

Gilt für:

WriteElementString(String, String, String)

Parameter

Ausnahmen

Beispiele

Hinweise

Gilt für:

WriteElementString(String, String, String, String)

Parameter

Ausnahmen

Hinweise

Gilt für:

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