XPathNavigator.DeleteRange(XPathNavigator) 方法

定义

命名空间:
System.Xml.XPath
程序集:
netstandard.dll, System.Xml.ReaderWriter.dll
程序集:
System.Xml.XPath.dll
程序集:
System.Xml.ReaderWriter.dll
程序集:
System.Xml.dll
程序集:
netstandard.dll
Source:
XPathNavigator.cs
Source:
XPathNavigator.cs
Source:
XPathNavigator.cs
Source:
XPathNavigator.cs
Source:
XPathNavigator.cs

从当前节点中删除一系列同级节点到指定的节点。

public:
 virtual void DeleteRange(System::Xml::XPath::XPathNavigator ^ lastSiblingToDelete);
public virtual void DeleteRange(System.Xml.XPath.XPathNavigator lastSiblingToDelete);
abstract member DeleteRange : System.Xml.XPath.XPathNavigator -> unit
override this.DeleteRange : System.Xml.XPath.XPathNavigator -> unit
Public Overridable Sub DeleteRange (lastSiblingToDelete As XPathNavigator)

参数

lastSiblingToDelete
XPathNavigator

定位在要删除的范围中的最后一个 XPathNavigator 同级节点上。

例外

ArgumentNullException

指定的 XPathNavigator 是 null。

NotSupportedException

不支持 XPathNavigator 编辑。

InvalidOperationException

要删除的最后一个节点不是当前节点的有效同级节点。

示例

在以下示例中，使用book该方法删除文件的第一个和第二个contosoBooks.xml元素DeleteRange。

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

XmlNamespaceManager manager = new XmlNamespaceManager(document.NameTable);
manager.AddNamespace("bk", "http://www.contoso.com/books");

XPathNavigator first = navigator.SelectSingleNode("/bk:bookstore/bk:book[1]", manager);
XPathNavigator last = navigator.SelectSingleNode("/bk:bookstore/bk:book[2]", manager);

navigator.MoveTo(first);
navigator.DeleteRange(last);
Console.WriteLine(navigator.OuterXml);

Dim document As XmlDocument = New XmlDocument()
document.Load("contosoBooks.xml")
Dim navigator As XPathNavigator = document.CreateNavigator()

Dim manager As XmlNamespaceManager = New XmlNamespaceManager(document.NameTable)
manager.AddNamespace("bk", "http://www.contoso.com/books")

Dim first As XPathNavigator = navigator.SelectSingleNode("/bk:bookstore/bk:book[1]", manager)
Dim last As XPathNavigator = navigator.SelectSingleNode("/bk:bookstore/bk:book[2]", manager)

navigator.MoveTo(first)
navigator.DeleteRange(last)
Console.WriteLine(navigator.OuterXml)

该示例将 contosoBooks.xml 文件作为输入。

<?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>

注解

该方法 DeleteRange 从当前节点中删除一系列同级节点，该 XPathNavigator 节点位于（非独占）上（含）到由参数（非独占）指定的 XPathNavigator 节点。 然后，该 XPathNavigator 节点位于其父节点上。

适用于