XPathNavigator.WriteSubtree(XmlWriter) Método

Definição

Transmite o nó atual e seus nós filho para o objeto XmlWriter especificado.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)

Parâmetros

writer
XmlWriter

O objeto XmlWriter para o qual transmitir.The XmlWriter object to stream to.

Exemplos

O exemplo a seguir ilustra o uso do WriteSubtree método no primeiro book elemento do contosoBooks.xml arquivo.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()

O exemplo usa o arquivo contosoBooks.xml como entrada.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>  

Comentários

As declarações de namespace para os namespaces no escopo do nó atual são inseridas no XML transmitido para o XmlWriter objeto especificado.Namespace declarations for the in-scope namespaces of the current node are inserted into the XML streamed to the XmlWriter object specified.

Por exemplo, se o WriteSubtree método for chamado no primeiro book elemento do books.xml arquivo, a declaração de http://www.contoso.com/books namespace feita na parte superior do documento XML será exibida no XML transmitido para o XmlWriter objeto especificado, conforme mostrado no exemplo a seguir.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>  

Observação

O WriteSubtree método não afeta a posição do XPathNavigator .The WriteSubtree method does not affect the position of the XPathNavigator.

Aplica-se a