IsDefault Property

XmlValidatingReader.IsDefault Property


Gets a value indicating whether the current node is an attribute that was generated from the default value defined in the document type definition (DTD) or schema.

Namespace:   System.Xml
Assembly:  System.Xml (in System.Xml.dll)

public override bool IsDefault { get; }

Property Value

Type: System.Boolean

true if the current node is an attribute whose value was generated from the default value defined in the DTD or schema; false if the attribute value was explicitly set.

This property applies only to an attribute node.


The XmlValidatingReader class is obsolete in .NET Framework 2.0.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.

The following example displays all attributes nodes on the root element.

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

public class Sample 
  public static void Main(){

    //Create the reader.
    XmlTextReader txtreader = new XmlTextReader("book4.xml");
    XmlValidatingReader reader = new XmlValidatingReader(txtreader);


    //Display each of the attribute nodes, including default attributes.
    while (reader.MoveToNextAttribute()){
        if (reader.IsDefault)
          Console.Write("(default attribute) ");
        Console.WriteLine("{0} = {1}", reader.Name, reader.Value);  

    //Close the reader.

} // End class

The example uses the following files as input.



.NET Framework
Available since 1.1
Return to top
© 2015 Microsoft