XmlWriter.WriteElementString XmlWriter.WriteElementString XmlWriter.WriteElementString XmlWriter.WriteElementString Method

Definition

Schreibt ein Element, das einen Zeichenfolgenwert enthält.Writes an element containing a string value.

Überlädt

WriteElementString(String, String) WriteElementString(String, String) WriteElementString(String, String) WriteElementString(String, String)

Schreibt ein Element mit dem angegebenen lokalen Namen und Wert.Writes an element with the specified local name and value.

WriteElementString(String, String, String) WriteElementString(String, String, String) WriteElementString(String, String, String) WriteElementString(String, String, String)

Schreibt ein Element mit dem angegebenen lokalen Namen, Namespace-URI und Wert.Writes an element with the specified local name, namespace URI, and value.

WriteElementString(String, String, String, String) WriteElementString(String, String, String, String) WriteElementString(String, String, String, String) WriteElementString(String, String, String, String)

Schreibt ein Element mit dem angegebenen Präfix, lokalen Namen, Namespace-URI und Wert.Writes an element with the specified prefix, local name, namespace URI, and value.

Hinweise

Die asynchrone Version dieser Methode finden Sie unter WriteElementStringAsync.For the asynchronous version of this method, see WriteElementStringAsync.

WriteElementString(String, String) WriteElementString(String, String) WriteElementString(String, String) WriteElementString(String, String)

Schreibt ein Element mit dem angegebenen lokalen Namen und Wert.Writes an element with the specified local name and value.

public:
 void WriteElementString(System::String ^ localName, System::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 String String String

Der lokale Name des Elements.The local name of the element.

value
String String String String

Der Wert des Elements.The value of the element.

Ausnahmen

Der localName-Wert ist null oder eine leere Zeichenfolge.The localName value is null or an empty string.

- oder - -or- Die Parameterwerte sind nicht gültig.The parameter values are not valid.

Es gibt ein Zeichen im Puffer, das ein gültiges XML-Zeichen ist, aber nicht gültig für die Ausgabecodierung ist.There is a character in the buffer that is a valid XML character but is not valid for the output encoding. Wenn die Ausgabecodierung z. B. ASCII ist, sollten Sie nur Zeichen im Bereich von 0 bis 127 für Element- und Attributnamen verwenden.For example, if the output encoding is ASCII, you should only use characters from the range of 0 to 127 for element and attribute names. Das ungültige Zeichen kann sich im Argument dieser Methode oder in einem Argument von vorherigen Methoden befinden, die in den Puffer geschrieben haben.The invalid character might be in the argument of this method or in an argument of previous methods that were writing to the buffer. Solche Zeichen werden wenn möglich von Zeichenentitätsverweisen maskiert (z. B., in Textknoten oder Attributwerten).Such characters are escaped by character entity references when possible (for example, in text nodes or attribute values). Der Zeichenentitätsverweis ist jedoch nicht in Element- und Attributnamen, Kommentaren, Verarbeitungsanweisungen oder CDATA-Abschnitten zugelassen.However, the character entity reference is not allowed in element and attribute names, comments, processing instructions, or CDATA sections.

Eine XmlWriter-Methode wurde aufgerufen, bevor ein vorheriger asynchroner Vorgang abgeschlossen wurde.An XmlWriter method was called before a previous asynchronous operation finished. In diesem Fall wird InvalidOperationException mit der Meldung „Es wird bereits ein asynchroner Vorgang ausgeführt“ ausgelöst.In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."

Beispiele

Im folgenden Beispiel wird mehrere Write-Methoden, um ein XML-Fragment zu erstellen.The following example uses several write methods to create an XML fragment.

#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
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 'Main 
End Class 'Sample

Hinweise

Die asynchrone Version dieser Methode finden Sie unter WriteElementStringAsync.For the asynchronous version of this method, see WriteElementStringAsync.

WriteElementString(String, String, String) WriteElementString(String, String, String) WriteElementString(String, String, String) WriteElementString(String, String, String)

Schreibt ein Element mit dem angegebenen lokalen Namen, Namespace-URI und Wert.Writes an element with the specified local name, namespace URI, and value.

public:
 void WriteElementString(System::String ^ localName, System::String ^ ns, System::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 String String String

Der lokale Name des Elements.The local name of the element.

ns
String String String String

Der Namespace-URI, der dem Element zugeordnet werden soll.The namespace URI to associate with the element.

value
String String String String

Der Wert des Elements.The value of the element.

Ausnahmen

Der localName-Wert ist null oder eine leere Zeichenfolge.The localName value is null or an empty string.

- oder - -or- Die Parameterwerte sind nicht gültig.The parameter values are not valid.

Es gibt ein Zeichen im Puffer, das ein gültiges XML-Zeichen ist, aber nicht gültig für die Ausgabecodierung ist.There is a character in the buffer that is a valid XML character but is not valid for the output encoding. Wenn die Ausgabecodierung z. B. ASCII ist, sollten Sie nur Zeichen im Bereich von 0 bis 127 für Element- und Attributnamen verwenden.For example, if the output encoding is ASCII, you should only use characters from the range of 0 to 127 for element and attribute names. Das ungültige Zeichen kann sich im Argument dieser Methode oder in einem Argument von vorherigen Methoden befinden, die in den Puffer geschrieben haben.The invalid character might be in the argument of this method or in an argument of previous methods that were writing to the buffer. Solche Zeichen werden wenn möglich von Zeichenentitätsverweisen maskiert (z. B., in Textknoten oder Attributwerten).Such characters are escaped by character entity references when possible (for example, in text nodes or attribute values). Der Zeichenentitätsverweis ist jedoch nicht in Element- und Attributnamen, Kommentaren, Verarbeitungsanweisungen oder CDATA-Abschnitten zugelassen.However, the character entity reference is not allowed in element and attribute names, comments, processing instructions, or CDATA sections.

Eine XmlWriter-Methode wurde aufgerufen, bevor ein vorheriger asynchroner Vorgang abgeschlossen wurde.An XmlWriter method was called before a previous asynchronous operation finished. In diesem Fall wird InvalidOperationException mit der Meldung „Es wird bereits ein asynchroner Vorgang ausgeführt“ ausgelöst.In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."

Beispiele

Im folgenden Beispiel wird mehrere Write-Methoden, um ein XML-Fragment zu erstellen.The following example uses several write methods to create an XML fragment.

#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
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 'Main 
End Class 'Sample

Hinweise

Die asynchrone Version dieser Methode finden Sie unter WriteElementStringAsync.For the asynchronous version of this method, see WriteElementStringAsync.

WriteElementString(String, String, String, String) WriteElementString(String, String, String, String) WriteElementString(String, String, String, String) WriteElementString(String, String, String, String)

Schreibt ein Element mit dem angegebenen Präfix, lokalen Namen, Namespace-URI und Wert.Writes an element with the specified prefix, local name, namespace URI, and value.

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);
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 String String String

Das Präfix des Elements.The prefix of the element.

localName
String String String String

Der lokale Name des Elements.The local name of the element.

ns
String String String String

Der Namespace-URI des Elements.The namespace URI of the element.

value
String String String String

Der Wert des Elements.The value of the element.

Ausnahmen

Der localName-Wert ist null oder eine leere Zeichenfolge.The localName value is null or an empty string.

- oder - -or- Die Parameterwerte sind nicht gültig.The parameter values are not valid.

Es gibt ein Zeichen im Puffer, das ein gültiges XML-Zeichen ist, aber nicht gültig für die Ausgabecodierung ist.There is a character in the buffer that is a valid XML character but is not valid for the output encoding. Wenn die Ausgabecodierung z. B. ASCII ist, sollten Sie nur Zeichen im Bereich von 0 bis 127 für Element- und Attributnamen verwenden.For example, if the output encoding is ASCII, you should only use characters from the range of 0 to 127 for element and attribute names. Das ungültige Zeichen kann sich im Argument dieser Methode oder in einem Argument von vorherigen Methoden befinden, die in den Puffer geschrieben haben.The invalid character might be in the argument of this method or in an argument of previous methods that were writing to the buffer. Solche Zeichen werden wenn möglich von Zeichenentitätsverweisen maskiert (z. B., in Textknoten oder Attributwerten).Such characters are escaped by character entity references when possible (for example, in text nodes or attribute values). Der Zeichenentitätsverweis ist jedoch nicht in Element- und Attributnamen, Kommentaren, Verarbeitungsanweisungen oder CDATA-Abschnitten zugelassen.However, the character entity reference is not allowed in element and attribute names, comments, processing instructions, or CDATA sections.

Eine XmlWriter-Methode wurde aufgerufen, bevor ein vorheriger asynchroner Vorgang abgeschlossen wurde.An XmlWriter method was called before a previous asynchronous operation finished. In diesem Fall wird InvalidOperationException mit der Meldung „Es wird bereits ein asynchroner Vorgang ausgeführt“ ausgelöst.In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."

Hinweise

Die asynchrone Version dieser Methode finden Sie unter WriteElementStringAsync.For the asynchronous version of this method, see WriteElementStringAsync.

Gilt für: