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XPathNavigator.AppendChild Method (XPathNavigator)

Creates a new child node at the end of the list of child nodes of the current node using the nodes in the XPathNavigator specified.

Namespace:  System.Xml.XPath
Assembly:  System.Xml (in System.Xml.dll)
public virtual void AppendChild(
	XPathNavigator newChild
)

Parameters

newChild
Type: System.Xml.XPath.XPathNavigator
An XPathNavigator object positioned on the node to add as the new child node.
ExceptionCondition
ArgumentNullException

The XPathNavigator object parameter is null.

InvalidOperationException

The current node the XPathNavigator is positioned on is not the root node or an element node.

NotSupportedException

The XPathNavigator does not support editing.

Appending a child node adds the new node to the end of the list of child nodes for the current node. For example, when three child nodes exist for an element, the appended node becomes the fourth child node. If no child nodes exist, then a new child node is created.

The following are important notes to consider when using the AppendChild method.

In the following example, a new pages child element is appended to the list of child elements of the first book element in the contosoBooks.xml file using the node contained in the XPathNavigator specified. The http://www.contoso.com/books namespace is specified so that the new child element is appended using the same namespace as the XML document.


XmlDocument document = new XmlDocument();
document.Load("contosoBooks.xml");
XPathNavigator navigator = document.CreateNavigator();

navigator.MoveToChild("bookstore", "http://www.contoso.com/books");
navigator.MoveToChild("book", "http://www.contoso.com/books");

XmlDocument childNodes = new XmlDocument();
childNodes.Load(new StringReader("<pages xmlns=\"http://www.contoso.com/books\">100</pages>"));
XPathNavigator childNodesNavigator = childNodes.CreateNavigator();


if(childNodesNavigator.MoveToChild("pages", "http://www.contoso.com/books")) 
{
    navigator.AppendChild(childNodesNavigator);
}

Console.WriteLine(navigator.OuterXml);


The example takes the contosoBooks.xml file as an input.


<?xml version="1.0" encoding="utf-8" ?>
<bookstore xmlns="http://www.contoso.com/books">
    <book genre="autobiography" publicationdate="1981-03-22" ISBN="1-861003-11-0">
        <title>The Autobiography of Benjamin Franklin</title>
        <author>
            <first-name>Benjamin</first-name>
            <last-name>Franklin</last-name>
        </author>
        <price>8.99</price>
    </book>
    <book genre="novel" publicationdate="1967-11-17" ISBN="0-201-63361-2">
        <title>The Confidence Man</title>
        <author>
            <first-name>Herman</first-name>
            <last-name>Melville</last-name>
        </author>
        <price>11.99</price>
    </book>
    <book genre="philosophy" publicationdate="1991-02-15" ISBN="1-861001-57-6">
        <title>The Gorgias</title>
        <author>
            <name>Plato</name>
        </author>
        <price>9.99</price>
    </book>
</bookstore>


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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