Click to Rate and Give Feedback
MSDN
MSDN Library
.NET Development
.NET Framework 3.5
XmlReader Class
 IsEmptyElement Property
This page is specific to
Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:
.NET Framework Class Library
XmlReader..::.IsEmptyElement Property

Updated: November 2007

When overridden in a derived class, gets a value indicating whether the current node is an empty element (for example, <MyElement/>).

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

Visual Basic (Declaration)
Public MustOverride ReadOnly Property IsEmptyElement As Boolean
Visual Basic (Usage)
Dim instance As XmlReader
Dim value As Boolean

value = instance.IsEmptyElement
C#
public abstract bool IsEmptyElement { get; }
Visual C++
public:
virtual property bool IsEmptyElement {
    bool get () abstract;
}
J#
/** @property */
public abstract boolean get_IsEmptyElement()
JScript
public abstract function get IsEmptyElement () : boolean

Property Value

Type: System..::.Boolean

true if the current node is an element (NodeType equals XmlNodeType.Element) that ends with />; otherwise, false.

This property enables you to determine the difference between the following:

<item num="123"/> (IsEmptyElement is true).

<item num="123"></item> (IsEmptyElement is false, although element content is empty).

A corresponding EndElement node is not generated for empty elements.

If default content has been added to an element due to schema validation, IsEmptyElement still returns true. It has no bearing on whether or not the element has a default value. In other words, IsEmptyElement simply reports whether or not the element in the source document had an end element tag.

The following example displays the text content of each element.

Visual Basic
While reader.Read()
  If reader.IsStartElement() Then
    If reader.IsEmptyElement Then
      Console.WriteLine("<{0}/>", reader.Name)
    Else
      Console.Write("<{0}> ", reader.Name)
      reader.Read() ' Read the start tag.
      If reader.IsStartElement() Then ' Handle nested elements.
        Console.Write(vbCr + vbLf + "<{0}>", reader.Name)
      End If
      Console.WriteLine(reader.ReadString()) 'Read the text content of the element.
    End If
  End If
End While

C#
while (reader.Read()) {
  if (reader.IsStartElement()) {
    if (reader.IsEmptyElement)
      Console.WriteLine("<{0}/>", reader.Name);
    else {
      Console.Write("<{0}> ", reader.Name);
      reader.Read(); // Read the start tag.
      if (reader.IsStartElement())  // Handle nested elements.
        Console.Write("\r\n<{0}>", reader.Name);
      Console.WriteLine(reader.ReadString());  //Read the text content of the element.
    }
  } 
} 

The example uses the file, elems.xml, as input.

<book>
  <title>Pride And Prejudice</title>
  <price>19.95</price>
  <misc/>
</book>

Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 2.0, 1.0
Tags What's this?: Add a tag
Community Content   What is Community Content?
Add new content RSS  Annotations
Processing
© 2008 Microsoft Corporation. All rights reserved. Terms of Use  |  Trademarks  |  Privacy Statement
Page view tracker