XmlValidatingReader.AttributeCount Property

Reference

Definition

Namespace:: System.Xml

Assemblies:: netstandard.dll, System.Xml.ReaderWriter.dll

Assembly:: System.Xml.ReaderWriter.dll

Assembly:: System.Xml.dll

Assembly:: netstandard.dll

Source:: XmlValidatingReader.cs

Source:: XmlValidatingReader.cs

Source:: XmlValidatingReader.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets the number of attributes on the current node.

public:
 virtual property int AttributeCount { int get(); };

public override int AttributeCount { get; }

member this.AttributeCount : int

Public Overrides ReadOnly Property AttributeCount As Integer

Property Value

Int32

The number of attributes on the current node. This number includes default attributes.

Examples

The following example reads all the elements on the root node.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlValidatingReader^ reader = nullptr;
   try
   {
      
      //Create the string to parse.
      String^ xmlFrag = "<book genre='novel' ISBN='1-861003-78' pubdate='1987'></book> ";
      
      //Create the XmlNamespaceManager.
      NameTable^ nt = gcnew NameTable;
      XmlNamespaceManager^ nsmgr = gcnew XmlNamespaceManager( nt );
      
      //Create the XmlParserContext.
      XmlParserContext^ context = gcnew XmlParserContext( nullptr,nsmgr,nullptr,XmlSpace::None );
      
      //Create the XmlValidatingReader .
      reader = gcnew XmlValidatingReader( xmlFrag,XmlNodeType::Element,context );
      
      //Read the attributes on the root element.
      reader->MoveToContent();
      if ( reader->HasAttributes )
      {
         for ( int i = 0; i < reader->AttributeCount; i++ )
         {
            reader->MoveToAttribute( i );
            Console::WriteLine( "{0} = {1}", reader->Name, reader->Value );

         }
         reader->MoveToElement();
      }
   }
   finally
   {
      if ( reader != nullptr )
            reader->Close();
   }

}

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

public class Sample
{
  public static void Main()
  {
    XmlValidatingReader reader = null;

    try
    {
       //Create the string to parse.
       string xmlFrag="<book genre='novel' ISBN='1-861003-78' pubdate='1987'></book> ";

       //Create the XmlNamespaceManager.
       NameTable nt = new NameTable();
       XmlNamespaceManager nsmgr = new XmlNamespaceManager(nt);

       //Create the XmlParserContext.
       XmlParserContext context = new XmlParserContext(null, nsmgr, null, XmlSpace.None);

       //Create the XmlValidatingReader .
       reader = new XmlValidatingReader(xmlFrag, XmlNodeType.Element, context);

       //Read the attributes on the root element.
       reader.MoveToContent();
       if (reader.HasAttributes){
         for (int i=0; i<reader.AttributeCount; i++){
            reader.MoveToAttribute(i);
            Console.WriteLine("{0} = {1}", reader.Name, reader.Value);
         }
         //Move the reader back to the node that owns the attribute.
         reader.MoveToElement();
       }
     }

     finally
     {
        if (reader != null)
          reader.Close();
      }
  }
} // End class

Option Strict
Option Explicit

Imports System.IO
Imports System.Xml

Public Class Sample
    
    Public Shared Sub Main()
        Dim reader As XmlValidatingReader = Nothing
        
        Try
            'Create the string to parse.
            Dim xmlFrag As String = "<book genre='novel' ISBN='1-861003-78' pubdate='1987'></book> "
            
            'Create the XmlNamespaceManager.
            Dim nt As New NameTable()
            Dim nsmgr As New XmlNamespaceManager(nt)
            
            'Create the XmlParserContext.
            Dim context As New XmlParserContext(Nothing, nsmgr, Nothing, XmlSpace.None)
            
            'Create the XmlValidatingReader .
            reader = New XmlValidatingReader(xmlFrag, XmlNodeType.Element, context)
            
            'Read the attributes on the root element.
            reader.MoveToContent()
            If reader.HasAttributes Then
                Dim i As Integer
                For i = 0 To reader.AttributeCount - 1
                    reader.MoveToAttribute(i)
                    Console.WriteLine("{0} = {1}", reader.Name, reader.Value)
                Next i
                'Move the reader back to the node that owns the attribute.
                reader.MoveToElement()
            End If
        
        
        Finally
            If Not (reader Is Nothing) Then
                reader.Close()
            End If
        End Try
    End Sub
End Class

Remarks

Anteckning

The XmlValidatingReader class is obsolete in .NET Framework 2.0. You can create a validating XmlReader instance by using the XmlReaderSettings class and the Create method. For more information, see the Remarks section of the XmlReader reference page.

This property is relevant to Element, DocumentType, and XmlDeclaration nodes only. (Other node types do not have attributes.)

Applies to

Produkt	Versioner
.NET	Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1

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