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XmlDocument.IsReadOnly Property

Gets a value indicating whether the current node is read-only.

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

public override bool IsReadOnly { get; }

Property Value

Type: System.Boolean
true if the current node is read-only; otherwise false. XmlDocument nodes always return false.

A read-only node is one whose properties, attributes, or children cannot be changed. You can remove a read-only node from the tree and insert it somewhere else.

This property is a Microsoft extension to the Document Object Model (DOM).

The following example shows how to use the IsReadOnly property.

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.DocumentElement.LastChild.FirstChild.IsReadOnly)
       Console.WriteLine("Entity reference nodes are always read-only");

  }
}
#using <mscorlib.dll>
#using <System.Xml.dll>
using namespace System;
using namespace System::IO;
using namespace System::Xml;

int main()
{
    //Create the XmlDocument.
    XmlDocument* doc = new XmlDocument();
    doc->LoadXml(S"<!DOCTYPE book [<!ENTITY h 'hardcover'>]>" 
                 S"<book genre='novel' ISBN='1-861001-57-5'>" 
                 S"<title>Pride And Prejudice</title>" 
                 S"<style>&h;</style>" 
                 S"</book>");

    //Check if the node is read-only.
    if (doc->DocumentElement->LastChild->FirstChild->IsReadOnly)
       Console::WriteLine(S"Entity reference nodes are always read-only");

}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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