XPathNavigator.WriteSubtree(XmlWriter) Method
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Streams the current node and its child nodes to the XmlWriter object specified.
public:
virtual void WriteSubtree(System::Xml::XmlWriter ^ writer);
public virtual void WriteSubtree (System.Xml.XmlWriter writer);
abstract member WriteSubtree : System.Xml.XmlWriter -> unit
override this.WriteSubtree : System.Xml.XmlWriter -> unit
Public Overridable Sub WriteSubtree (writer As XmlWriter)
The following example illustrates using the WriteSubtree method on the first book
element of the contosoBooks.xml
file.
XPathDocument^ document = gcnew XPathDocument("contosoBooks.xml");
XPathNavigator^ navigator = document->CreateNavigator();
navigator->MoveToChild("bookstore", "http://www.contoso.com/books");
navigator->MoveToChild("book", "http://www.contoso.com/books");
XmlWriter^ writer = XmlWriter::Create("contosoBook.xml");
navigator->WriteSubtree(writer);
writer->Close();
XPathDocument document = new XPathDocument("contosoBooks.xml");
XPathNavigator navigator = document.CreateNavigator();
navigator.MoveToChild("bookstore", "http://www.contoso.com/books");
navigator.MoveToChild("book", "http://www.contoso.com/books");
XmlWriter writer = XmlWriter.Create("contosoBook.xml");
navigator.WriteSubtree(writer);
writer.Close();
Dim document As XPathDocument = New XPathDocument("contosoBooks.xml")
Dim navigator As XPathNavigator = document.CreateNavigator()
navigator.MoveToChild("bookstore", "http://www.contoso.com/books")
navigator.MoveToChild("book", "http://www.contoso.com/books")
Dim writer As XmlWriter = XmlWriter.Create("contosoBook.xml")
navigator.WriteSubtree(writer)
writer.Close()
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>
Namespace declarations for the in-scope namespaces of the current node are inserted into the XML streamed to the XmlWriter object specified.
For example, if the WriteSubtree method is called on the first book
element of the books.xml
file, the http://www.contoso.com/books
namespace declaration made at the top of the XML document will appear in the XML streamed to the XmlWriter object specified as shown in the following example.
<?xml version="1.0" encoding="utf-8"?>
<book genre="autobiography" publicationdate="1981" ISBN="1-861003-11-0" xmlns="http://www.contoso.com/books">
<title>The Autobiography of Benjamin Franklin</title>
<author>
<first-name>Benjamin</first-name>
<last-name>Franklin</last-name>
</author>
<price>8.99</price>
</book>
Note
The WriteSubtree method does not affect the position of the XPathNavigator.
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
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