XPathNavigator.WriteSubtree(XmlWriter) 方法

定義

命名空間:

System.Xml.XPath

組件:

System.Xml.ReaderWriter.dll

Source:

XPathNavigator.cs

將目前節點和其子節點的資料流導向指定的 XmlWriter 物件。

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)

參數

writer

XmlWriter

要將資料流導向其中的 XmlWriter 物件。

範例

下列範例說明如何在 WriteSubtree 檔案的第一個專案 bookcontosoBooks.xml 上使用 方法。

    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()

範例將 contosoBooks.xml 檔案做為輸入。

<?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>  

備註

目前節點之範圍內命名空間的命名空間宣告會插入 XML 中，並串流處理至 XmlWriter 指定的物件。

例如，如果在 WriteSubtree 檔案的第一 book 個元素 books.xml 上呼叫 方法，XML 檔頂端所建立的命名空間宣告會出現在 XML 串流至 XmlWriter 指定的 物件中， http://www.contoso.com/books 如下列範例所示。

<?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>  

注意

方法 WriteSubtree 不會影響 的位置 XPathNavigator 。