XmlWriter.Close Method ()


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When overridden in a derived class, closes this stream and the underlying stream.

Namespace:   System.Xml
Assembly:  System.Xml (in System.Xml.dll)

Public Overridable Sub Close

Exception Condition

A call is made to write more output after Close has been called or the result of this call is an invalid XML document.


An XmlWriter method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message “An asynchronous operation is already in progress.”

Any elements or attributes left open are automatically closed.


When you use the XmlWriter methods to output XML, the elements and attributes will not be written until you call the Close method. 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.

The following example writes an XML node.

Option Explicit
Option Strict

Imports System
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.

     ' Write the title element.
     writer.WriteString("Pride And Prejudice")

     ' Write the close tag for the root element.

     ' Write the XML and close the writer.

  End Sub 'Main 
End Class 'Sample

.NET Framework
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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