XmlDocument.CreateElement Method (String, String, String)

 

Creates an element with the specified Prefix, LocalName, and NamespaceURI.

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

Public Overridable Function CreateElement (
	prefix As String,
	localName As String,
	namespaceURI As String
) As XmlElement

Parameters

prefix
Type: System.String

The prefix of the new element (if any). String.Empty and null are equivalent.

localName
Type: System.String

The local name of the new element.

namespaceURI
Type: System.String

The namespace URI of the new element (if any). String.Empty and null are equivalent.

Return Value

Type: System.Xml.XmlElement

The new XmlElement.

The following C# code

XmlElement elem;
elem=doc.CreateElement("xy", "item", "urn:abc");

creates an element equivalent to the following XML text:

<xy:item xmlns:xy="urn:abc"/>

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 (www.w3.org/TR/1998/REC-xml-19980210), Element nodes are allowed within Document and Element nodes, and in EntityReference nodes when the EntityReference is outside an Attribute node.

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

The following example adds a new element to the existing XML document.

Imports System
Imports System.IO
Imports System.Xml

public class Sample 

  public shared sub Main() 

    ' Create the XmlDocument.
    Dim doc as XmlDocument = new XmlDocument()
    Dim xmlData as string = "<book xmlns:bk='urn:samples'></book>"

    doc.Load(new StringReader(xmlData))

    ' Create a new element and add it to the document.
    Dim elem as XmlElement = doc.CreateElement("bk", "genre", "urn:samples")
    elem.InnerText = "fantasy"
    doc.DocumentElement.AppendChild(elem)

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

  end sub
end class

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
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