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XmlDocument.CreateNode Method

  • Reference

Definition

Namespace:
System.Xml
Assemblies:
System.Xml.dll, System.Xml.XmlDocument.dll
Assembly:
System.Xml.ReaderWriter.dll
Assembly:
System.Xml.XmlDocument.dll
Assembly:
System.Xml.dll
Assembly:
netstandard.dll

Creates an XmlNode.

Overloads

CreateNode(String, String, String)

Creates an XmlNode with the specified node type, Name, and NamespaceURI.
CreateNode(XmlNodeType, String, String)

Creates an XmlNode with the specified XmlNodeType, Name, and NamespaceURI.
CreateNode(XmlNodeType, String, String, String)

Creates a XmlNode with the specified XmlNodeType, Prefix, Name, and NamespaceURI.

CreateNode(String, String, String)

Source:
XmlDocument.cs
Source:
XmlDocument.cs
Source:
XmlDocument.cs

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

public:
 virtual System::Xml::XmlNode ^ CreateNode(System::String ^ nodeTypeString, System::String ^ name, System::String ^ namespaceURI);
public virtual System.Xml.XmlNode CreateNode (string nodeTypeString, string name, string namespaceURI);
public virtual System.Xml.XmlNode CreateNode (string nodeTypeString, string name, string? namespaceURI);
abstract member CreateNode : string * string * string -> System.Xml.XmlNode
override this.CreateNode : string * string * string -> System.Xml.XmlNode
Public Overridable Function CreateNode (nodeTypeString As String, name As String, namespaceURI As String) As XmlNode

Parameters

nodeTypeString
String

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

name
String

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

namespaceURI
String

The namespace URI of the new node.

Returns

XmlNode

The new XmlNode.

Exceptions

ArgumentException

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

Examples

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

#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew 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 );
}


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);
   }
 }

Imports System.Xml

public class Sample 

  public shared sub Main() 

       Dim doc as XmlDocument = new XmlDocument()
       doc.LoadXml("<book>" & _
                   "  <title>Oberon's Legacy</title>" & _
                   "  <price>5.95</price>" & _
                   "</book>") 
 
       ' Create a new element node.
       Dim newElem as XmlNode = doc.CreateNode("element", "pages", "")  
       newElem.InnerText = "290"
     
       Console.WriteLine("Add the new element to the document...")
       Dim root as XmlElement = doc.DocumentElement
       root.AppendChild(newElem)
     
       Console.WriteLine("Display the modified XML document...")
       Console.WriteLine(doc.OuterXml)
   end sub
end class

Remarks

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.

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).

Applies to

CreateNode(XmlNodeType, String, String)

Source:
XmlDocument.cs
Source:
XmlDocument.cs
Source:
XmlDocument.cs

Creates an XmlNode with the specified XmlNodeType, Name, and NamespaceURI.

public:
 virtual System::Xml::XmlNode ^ CreateNode(System::Xml::XmlNodeType type, System::String ^ name, System::String ^ namespaceURI);
public virtual System.Xml.XmlNode CreateNode (System.Xml.XmlNodeType type, string name, string namespaceURI);
public virtual System.Xml.XmlNode CreateNode (System.Xml.XmlNodeType type, string name, string? namespaceURI);
abstract member CreateNode : System.Xml.XmlNodeType * string * string -> System.Xml.XmlNode
override this.CreateNode : System.Xml.XmlNodeType * string * string -> System.Xml.XmlNode
Public Overridable Function CreateNode (type As XmlNodeType, name As String, namespaceURI As String) As XmlNode

Parameters

type
XmlNodeType

The XmlNodeType of the new node.

name
String

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

namespaceURI
String

The namespace URI of the new node.

Returns

XmlNode

The new XmlNode.

Exceptions

ArgumentException

The name was not provided and the XmlNodeType requires a name.

Examples

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

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   
   //Create the XmlDocument.
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book genre='novel' ISBN='1-861001-57-5'><title>Pride And Prejudice</title></book>" );
   
   //Create a new node and add it to the document.
   XmlNode^ elem = doc->CreateNode( XmlNodeType::Element, "price", nullptr );
   elem->InnerText = "19.95";
   doc->DocumentElement->AppendChild( elem );
   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()
  {
    //Create the XmlDocument.
    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" +
                "<title>Pride And Prejudice</title>" +
                "</book>");

    //Create a new node and add it to the document.
    XmlNode elem = doc.CreateNode(XmlNodeType.Element, "price", null);
    elem.InnerText = "19.95";
    doc.DocumentElement.AppendChild(elem);

    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()
        'Create the XmlDocument.
        Dim doc As New XmlDocument()
        doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" & _
                    "<title>Pride And Prejudice</title>" & _
                    "</book>")
        
        'Create a new node and add it to the document.
        Dim elem As XmlNode = doc.CreateNode(XmlNodeType.Element, "price", Nothing)
        elem.InnerText = "19.95"
        doc.DocumentElement.AppendChild(elem)
        
        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.

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.

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).

Applies to

CreateNode(XmlNodeType, String, String, String)

Source:
XmlDocument.cs
Source:
XmlDocument.cs
Source:
XmlDocument.cs

Creates a XmlNode with the specified XmlNodeType, Prefix, Name, and NamespaceURI.

public:
 virtual System::Xml::XmlNode ^ CreateNode(System::Xml::XmlNodeType type, System::String ^ prefix, System::String ^ name, System::String ^ namespaceURI);
public virtual System.Xml.XmlNode CreateNode (System.Xml.XmlNodeType type, string prefix, string name, string namespaceURI);
public virtual System.Xml.XmlNode CreateNode (System.Xml.XmlNodeType type, string? prefix, string name, string? namespaceURI);
abstract member CreateNode : System.Xml.XmlNodeType * string * string * string -> System.Xml.XmlNode
override this.CreateNode : System.Xml.XmlNodeType * string * string * string -> System.Xml.XmlNode
Public Overridable Function CreateNode (type As XmlNodeType, prefix As String, name As String, namespaceURI As String) As XmlNode

Parameters

type
XmlNodeType

The XmlNodeType of the new node.

prefix
String

The prefix of the new node.

name
String

The local name of the new node.

namespaceURI
String

The namespace URI of the new node.

Returns

XmlNode

The new XmlNode.

Exceptions

ArgumentException

The name was not provided and the XmlNodeType requires a name.

Examples

The following example adds a new element to the document.

#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book>  <title>Oberon's Legacy</title>  <price>5.95</price></book>" );
   
   // Create a new element node.
   XmlNode^ newElem;
   newElem = doc->CreateNode( XmlNodeType::Element, "g" , "ISBN" , "https://global.ISBN/list" );
   newElem->InnerText = "1-861001-57-5";
    
   // Add the new element to the document
   XmlElement^ root = doc->DocumentElement;
   root->AppendChild( newElem );
    
   // Display the modified XML document
   Console::WriteLine( doc->OuterXml );
    
    // Output:
    // <book><title>Oberon's Legacy</title><price>5.95</price><g:ISBN xmlns:g="https://global.ISBN/list">1-861001-57-5</g:ISBN></book>
}


using System;
using System.Xml;

public class Sample {

  public static void Main() {

        // Create a new document containing information about a book
        XmlDocument doc = new XmlDocument();
        doc.LoadXml("<book>" +
                    "  <title>Oberon's Legacy</title>" +
                    "  <price>5.95</price>" +
                    "</book>");

        // Create a new element node for the ISBN of the book
        // It is possible to supply a prefix for this node, and specify a qualified namespace.
        XmlNode newElem;
        newElem = doc.CreateNode(XmlNodeType.Element, "g", "ISBN", "https://global.ISBN/list");
        newElem.InnerText = "1-861001-57-5";

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

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

        //Output:
        // <book><title>Oberon's Legacy</title><price>5.95</price><g:ISBN xmlns:g="https://global.ISBN/list">1-861001-57-5</g:ISBN></book>
   }
 }

Imports System.Xml

public class Sample 

  public shared sub Main() 

        Dim doc as XmlDocument = new XmlDocument()
        doc.LoadXml("<book>" & _
                    "  <title>Oberon's Legacy</title>" & _
                    "  <price>5.95</price>" & _
                       "</book>") 
 
        ' Create a new element node.
        ' It is possible to supply a prefix for this node, and specify a qualified namespace
        Dim newElem as XmlNode
        newElem = doc.CreateNode(XmlNodeType.Element,"g", "ISBN","https://global.ISBN/list")
        newElem.InnerText = "1-861001-57-5"
     
        ' Add the new element to the document
        Dim root as XmlElement = doc.DocumentElement
        root.AppendChild(newElem)
     
        ' Display the modified XML document
        Console.WriteLine(doc.OuterXml)
        
        ' Output:
        ' <book><title>Oberon's Legacy</title><price>5.95</price><g:ISBN xmlns:g="https://global.ISBN/list">1-861001-57-5</g:ISBN></book>
   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.

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.

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 the Element node.

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

Applies to