XPathNavigator.WriteSubtree(XmlWriter) Metode

Definisi

Ruang nama:

System.Xml.XPath

Rakitan:

System.Xml.ReaderWriter.dll

Sumber:

XPathNavigator.cs

Mengalirkan simpul saat ini dan simpul anaknya ke XmlWriter objek yang ditentukan.

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)

Parameter

writer

XmlWriter

Objek XmlWriter yang akan dialirkan.

Contoh

Contoh berikut mengilustrasikan menggunakan WriteSubtree metode pada elemen contosoBooks.xml pertama book 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()

Contoh menggunakan file contosoBooks.xml sebagai 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>  

Keterangan

Deklarasi namespace layanan untuk namespace dalam cakupan simpul saat ini dimasukkan ke dalam XML yang dialirkan ke XmlWriter objek yang ditentukan.

Misalnya, jika WriteSubtree metode dipanggil pada elemen books.xml pertama book file, http://www.contoso.com/books deklarasi namespace yang dibuat di bagian atas dokumen XML akan muncul di XML yang dialirkan ke XmlWriter objek yang ditentukan seperti yang ditunjukkan dalam contoh berikut.

<?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>  

Catatan

Metode WriteSubtree ini tidak mempengaruhi posisi XPathNavigator.