XmlNode.FirstChild 属性

定义

获取节点的第一个子级。Gets the first child of the node.

public:
 virtual property System::Xml::XmlNode ^ FirstChild { System::Xml::XmlNode ^ get(); };
public virtual System.Xml.XmlNode FirstChild { get; }
public virtual System.Xml.XmlNode? FirstChild { get; }
member this.FirstChild : System.Xml.XmlNode
Public Overridable ReadOnly Property FirstChild As XmlNode

属性值

XmlNode

节点的第一个子级。The first child of the node. 如果没有这样的节点,则返回 nullIf there is no such node, null is returned.

示例

下面的示例显示 title 元素。The following example displays the title element.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book ISBN='1-861001-57-5'>"
   "<title>Pride And Prejudice</title>"
   "<price>19.95</price>"
   "</book>" );
   XmlNode^ root = doc->FirstChild;
   Console::WriteLine( "Display the title element..." );
   Console::WriteLine( root->FirstChild->OuterXml );
}

using System;
using System.IO;
using System.Xml;

public class Sample {

  public static void Main() {

    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<book ISBN='1-861001-57-5'>" +
                "<title>Pride And Prejudice</title>" +
                "<price>19.95</price>" +
                "</book>");

    XmlNode root = doc.FirstChild;

    Console.WriteLine("Display the title element...");
    Console.WriteLine(root.FirstChild.OuterXml);
  }
}
Option Explicit
Option Strict

Imports System.IO
Imports System.Xml

Public Class Sample
    
    Public Shared Sub Main()
        
        Dim doc As New XmlDocument()
        doc.LoadXml("<book ISBN='1-861001-57-5'>" & _
                    "<title>Pride And Prejudice</title>" & _
                    "<price>19.95</price>" & _
                    "</book>")
        
        Dim root As XmlNode = doc.FirstChild
        
        Console.WriteLine("Display the title element...")
        Console.WriteLine(root.FirstChild.OuterXml)
    End Sub
End Class

注解

有关子节点的信息,请参阅 W3C DOM (Core) Level 1 规范For information about child nodes, see the W3C DOM (Core) Level 1 specification

适用于