XmlTextWriter.WriteWhitespace(String) Metodo

Definizione

Spazio dei nomi:

System.Xml

Assembly:

System.Xml.ReaderWriter.dll

Source:

XmlTextWriter.cs

Scrive lo spazio vuoto specificato.

public:
 override void WriteWhitespace(System::String ^ ws);

public override void WriteWhitespace (string? ws);

override this.WriteWhitespace : string -> unit

Public Overrides Sub WriteWhitespace (ws As String)

Parametri

ws

String

Stringa di caratteri spazio vuoto.

Eccezioni

ArgumentException

La stringa contiene caratteri di non spazio.

Esempio

Nell'esempio seguente viene utilizzato il WriteWhitespace metodo per controllare la formattazione del file.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   
   // Create the writer.
   XmlTextWriter^ writer = nullptr;
   writer = gcnew XmlTextWriter( "ws.html", nullptr );
   
   // Write an element (this one is the root).
   writer->WriteStartElement( "p" );
   
   // Write the xml:space attribute.
   writer->WriteAttributeString( "xml", "space", nullptr, "preserve" );
   
   // Verify that xml:space is set properly.
   if ( writer->XmlSpace == XmlSpace::Preserve )
      Console::WriteLine( "xmlspace is correct!" );

   
   // Write out the HTML elements.  Insert white space
   // between 'something' and 'Big'
   writer->WriteString( "something" );
   writer->WriteWhitespace( "  " );
   writer->WriteElementString( "b", "B" );
   writer->WriteString( "ig" );
   
   // Write the root end element.
   writer->WriteEndElement();
   
   // Write the XML to file and close the writer.
   writer->Close();
}

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

public class Sample
{
  public static void Main()
  {
    // Create the writer.
    XmlTextWriter writer = null;
    writer = new XmlTextWriter ("ws.html", null);

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

    // Write the xml:space attribute.
    writer.WriteAttributeString("xml", "space", null, "preserve");

    // Verify that xml:space is set properly.
    if (writer.XmlSpace == XmlSpace.Preserve)
      Console.WriteLine("xmlspace is correct!");

    // Write out the HTML elements.  Insert white space
    // between 'something' and 'Big'
    writer.WriteString("something");
    writer.WriteWhitespace("  ");
    writer.WriteElementString("b", "B");
    writer.WriteString("ig");

    // Write the root end element.
    writer.WriteEndElement();

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

Option Strict
Option Explicit

Imports System.IO
Imports System.Xml

Public Class Sample
    
    Public Shared Sub Main()
        ' Create the writer.
        Dim writer As XmlTextWriter = Nothing
        writer = New XmlTextWriter("ws.html", Nothing)
        
        ' Write an element (this one is the root).
        writer.WriteStartElement("p")
        
        ' Write the xml:space attribute.
        writer.WriteAttributeString("xml", "space", Nothing, "preserve")
        
        ' Verify that xml:space is set properly.
        If writer.XmlSpace = XmlSpace.Preserve Then
            Console.WriteLine("xmlspace is correct!")
        End If 
        ' Write out the HTML elements.  Insert white space
        ' between 'something' and 'Big'.
        writer.WriteString("something")
        writer.WriteWhitespace("  ")
        writer.WriteElementString("b", "B")
        writer.WriteString("ig")
        
        ' Write the root end element.
        writer.WriteEndElement()
        
        ' Write the XML to file and close the writer.
        writer.Close()
    End Sub
End Class

Commenti

Nota

A partire da .NET Framework 2.0, è consigliabile creare XmlWriter istanze usando il XmlWriter.Create metodo e la XmlWriterSettings classe per sfruttare le nuove funzionalità.

Questo metodo viene usato per formattare manualmente il documento. Utilizzare la Formatting proprietà per fare in modo che il writer formatti automaticamente l'output.

Vedi anche

• Formatting