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XmlDocument.CreateNode Method (String, String, String)

Creates an XmlNode with the specified node type, Name, and NamespaceURI.

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

public virtual XmlNode CreateNode(
	string nodeTypeString,
	string name,
	string namespaceURI
)

Parameters

nodeTypeString
Type: System.String

String version of the XmlNodeType of the new node. This parameter must be one of the values listed in the table below.

name
Type: System.String

The qualified name of the new node. If the name contains a colon, it is parsed into Prefix and LocalName components.

namespaceURI
Type: System.String

The namespace URI of the new node.

Return Value

Type: System.Xml.XmlNode
The new XmlNode.

ExceptionCondition
ArgumentException

The name was not provided and the XmlNodeType requires a name; or nodeTypeString is not one of the strings listed below.

The nodeTypeString parameter is case sensitive and must be one of the values in the following table.

nodeTypeString

XmlNodeType

attribute

Attribute

cdatasection

CDATA

comment

Comment

document

Document

documentfragment

DocumentFragment

documenttype

DocumentType

element

Element

entityreference

EntityReference

processinginstruction

ProcessingInstruction

significantwhitespace

SignificantWhitespace

text

Text

whitespace

Whitespace

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.

The following table shows you what NodeType[row] is allowed inside another NodeType[column] according to the W3C Extensible Markup Language (XML) 1.0 recommendation (www.w3.org/TR/1998/REC-xml-19980210).

 

Document

DocumentType

XmlDeclaration

Element

Attribute

Text

CDATA

Markup

EntityReference

Document

no

no

no

no

no

no

no

no

no

DocumentType

yes

no

no

no

no

no

no

no

no

XmlDeclaration

yes*

no

no

no

no

no

no

no

no

Element

yes

no

no

yes

no

no

no

no

yes***

Attribute

no

no

no

yes****

no

no

no

no

no

Text

no

no

no

yes

yes

no

no

no

yes

CDATA

no

no

no

yes

no

no

no

no

yes***

Markup**

yes

no

no

yes

no

no

no

no

no

EntityReference

no

no

no

yes

yes

no

no

no

yes

* The XmlDeclaration node must be the first child of the Document node.

** Markup includes ProcessingInstruction and Comment nodes.

*** Element and CDATA nodes are only allowed in EntityReference nodes when the EntityReference node is not a child of an Attribute node.

**** Attributes are not children of an Element node. Attributes are contained inside an attribute collection that belongs to an Element node.

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

The following example creates a new element and inserts it into the document.

using System;
using System.Xml;

public class Sample {

  public static void Main() {

       XmlDocument doc = new XmlDocument();
       doc.LoadXml("<book>" +
                   "  <title>Oberon's Legacy</title>" +
                   "  <price>5.95</price>" +
                   "</book>"); 

       // Create a new element node.
       XmlNode newElem = doc.CreateNode("element", "pages", "");  
       newElem.InnerText = "290";

       Console.WriteLine("Add the new element to the document...");
       XmlElement root = doc.DocumentElement;
       root.AppendChild(newElem);

       Console.WriteLine("Display the modified XML document...");
       Console.WriteLine(doc.OuterXml);
   }
 }

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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