XmlNode.HasChildNodes 屬性

定義

命名空間:

System.Xml

組件:

System.Xml.dll, System.Xml.XmlDocument.dll

組件:

System.Xml.ReaderWriter.dll

組件:

System.Xml.XmlDocument.dll

組件:

System.Xml.dll

組件:

netstandard.dll

取得值，指出這個節點是否有子節點。

public:
 virtual property bool HasChildNodes { bool get(); };

public virtual bool HasChildNodes { get; }

member this.HasChildNodes : bool

Public Overridable ReadOnly Property HasChildNodes As Boolean

屬性值

Boolean

如果該節點有子節點，則為 true，否則為 false。

範例

下列範例會顯示根項目的所有子節點。

#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;
   
   //Display the contents of the child nodes.
   if ( root->HasChildNodes )
   {
      for ( int i = 0; i < root->ChildNodes->Count; i++ )
      {
         Console::WriteLine( root->ChildNodes[ i ]->InnerText );
      }
   }
}

using System;
using System.Xml;

public class Sample2
{
    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;

        //Display the contents of the child nodes.
        if (root.HasChildNodes)
        {
            for (int i = 0; i < root.ChildNodes.Count; i++)
            {
                Console.WriteLine(root.ChildNodes[i].InnerText);
            }
        }
    }
}

Option Strict
Option Explicit

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
        
        'Display the contents of the child nodes.
        If root.HasChildNodes Then
            Dim i As Integer
            For i = 0 To root.ChildNodes.Count - 1
                Console.WriteLine(root.ChildNodes(i).InnerText)
            Next i
        End If
    End Sub
End Class

備註

如需子節點的相關資訊，請參閱 W3C DOM (Core) 層級 1 規格