XmlEntityReference.IsReadOnly 属性

public:
 virtual property bool IsReadOnly { bool get(); };

public override bool IsReadOnly { get; }

member this.IsReadOnly : bool

Public Overrides ReadOnly Property IsReadOnly As Boolean

属性值

true 如果节点为只读，则为否则 false。

由于 XmlEntityReference 节点是只读的，因此此属性始终返回 true。

示例

以下示例演示如何使用该 IsReadOnly 属性。

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

public class Sample
{
  public static void Main()
  {
    //Create the XmlDocument.
    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<!DOCTYPE book [<!ENTITY h 'hardcover'>]>" +
                "<book genre='novel' ISBN='1-861001-57-5'>" +
                "<title>Pride And Prejudice</title>" +
                "<style>&h;</style>" +
                "</book>");

    // Determine whether the node is read-only.
    XmlEntityReference entref = (XmlEntityReference) doc.DocumentElement.LastChild.FirstChild;
    if (entref.IsReadOnly)
       Console.WriteLine("Entity reference nodes are always read-only");
  }
}

Option Explicit
Option Strict

Imports System.IO
Imports System.Xml

Public Class Sample
    
    Public Shared Sub Main()
        'Create the XmlDocument.
        Dim doc As New XmlDocument()
        doc.LoadXml("<!DOCTYPE book [<!ENTITY h 'hardcover'>]>" & _
                    "<book genre='novel' ISBN='1-861001-57-5'>" & _
                    "<title>Pride And Prejudice</title>" & _
                    "<style>&h;</style>" & _
                    "</book>")
        
        ' Determine whether the node is read-only.
        Dim entref As XmlEntityReference = CType(doc.DocumentElement.LastChild.FirstChild, XmlEntityReference)
        If entref.IsReadOnly Then
            Console.WriteLine("Entity reference nodes are always read-only")
        End If
    End Sub
End Class

注解

只读节点是不能更改其属性、属性或子节点的节点。 但是，可以从树中删除只读节点并将其插入其他位置。

此属性是文档对象模型（DOM）的Microsoft扩展。