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	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 the Element node.

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

Namespace: System.Xml
Assembly: System.Xml (in System.Xml.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0