XmlDocument.CreateComment(String) Method

Definition

Namespace:

System.Xml

Assembly:

System.Xml.ReaderWriter.dll

Source:

XmlDocument.cs

Creates an XmlComment containing the specified data.

public:
 virtual System::Xml::XmlComment ^ CreateComment(System::String ^ data);

public virtual System.Xml.XmlComment CreateComment (string? data);

abstract member CreateComment : string -> System.Xml.XmlComment
override this.CreateComment : string -> System.Xml.XmlComment

Public Overridable Function CreateComment (data As String) As XmlComment

Parameters

data

String

The content of the new XmlComment.

Returns

XmlComment

The new XmlComment.

Examples

The following example creates a comment and adds it to an XML document.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book genre='novel' ISBN='1-861001-57-5'><title>Pride And Prejudice</title></book>" );
   
   //Create a comment.
   XmlComment^ newComment;
   newComment = doc->CreateComment( "Sample XML document" );
   
   //Add the new node to the document.
   XmlElement^ root = doc->DocumentElement;
   doc->InsertBefore( newComment, root );
   Console::WriteLine( "Display the modified XML..." );
   doc->Save( Console::Out );
}

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

public class Sample
{
  public static void Main()
  {
    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" +
                "<title>Pride And Prejudice</title>" +
                "</book>");

    //Create a comment.
    XmlComment newComment;
    newComment = doc.CreateComment("Sample XML document");

    //Add the new node to the document.
    XmlElement root = doc.DocumentElement;
    doc.InsertBefore(newComment, root);

    Console.WriteLine("Display the modified XML...");
    doc.Save(Console.Out);
  }
}

Option Explicit
Option Strict

Imports System.IO
Imports System.Xml

Public Class Sample
    
    Public Shared Sub Main()
        Dim doc As New XmlDocument()
        doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" & _
                    "<title>Pride And Prejudice</title>"  & _
                    "</book>")
        
        'Create a comment.
        Dim newComment As XmlComment
        newComment = doc.CreateComment("Sample XML document")
        
        'Add the new node to the document.
        Dim root As XmlElement = doc.DocumentElement
        doc.InsertBefore(newComment, root)
        
        Console.WriteLine("Display the modified XML...")
        doc.Save(Console.Out)
    End Sub
End Class

Remarks

Although this method creates the new object in the context of the document, it does not automatically add the new object to the document tree. To add the new object, you must explicitly call one of the node insert methods.

According to the W3C Extensible Markup Language (XML) 1.0 recommendation, Comment nodes are only allowed within Document, Element and EntityReference nodes, when the EntityReference node is not a child of an Attribute node.