XmlWriter.Close 方法

定义

命名空间:
System.Xml
程序集:
netstandard.dll, System.Xml.ReaderWriter.dll
程序集:
System.Xml.ReaderWriter.dll
程序集:
System.Xml.dll
程序集:
netstandard.dll
Source:
XmlWriter.cs
Source:
XmlWriter.cs
Source:
XmlWriter.cs
Source:
XmlWriter.cs
Source:
XmlWriter.cs

在派生类中重写时，关闭此流和基础流。

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 ()

例外

InvalidOperationException

调用后 Close 要写入更多输出的调用，或者此调用的结果是无效的 XML 文档。

-或-

在上一个异步操作完成之前调用了一个 XmlWriter 方法。 在这种情况下， InvalidOperationException 会引发消息“正在进行异步操作”。

示例

以下示例写入 XML 节点。

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

注解

所有保持打开状态的元素或属性都会自动关闭。

注释

使用 XmlWriter 方法输出 XML 时，在调用 Close 该方法之前，不会写入元素和属性。 例如，如果使用 XmlWriter 填充一个 XmlDocument，直到关闭， XmlWriter将无法观察目标文档中的写入元素和属性。

适用于