XmlDocumentType.IsReadOnly 屬性

定義

會得到一個值,表示該節點是否為唯讀。

public:
 virtual property bool IsReadOnly { bool get(); };
public override bool IsReadOnly { get; }
member this.IsReadOnly : bool
Public Overrides ReadOnly Property IsReadOnly As Boolean

屬性值

true如果節點是唯讀;否則,。 false

由於 DocumentType 節點是唯讀的,此特性總是回傳 true

範例

以下範例顯示了關於 DocumentType 節點的資訊。

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.
    if (doc.DocumentType.IsReadOnly)
       Console.WriteLine("Document type 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>")
        
        Dim doctype As XmlDocumentType = doc.DocumentType
        
        ' Determine whether the node is read-only.
        If doctype.IsReadOnly Then
            Console.WriteLine("Document type nodes are always read-only")
        End If 
    End Sub
End Class

備註

唯讀節點是指其屬性、屬性或子節點無法更改的節點。 不過,你可以從樹中移除唯讀節點,然後插入到其他地方。

你可以從文件中移除 a XmlDocumentType 並重新插入文件,只要文件沒有元素節點。 一旦文件有根元素,就無法更改。XmlDocumentType

此屬性是 Microsoft 對文件物件模型(DOM)的擴充。

適用於