NullExtension Class
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml
[MarkupExtensionReturnTypeAttribute(typeof(Object))] public class NullExtension : MarkupExtension
/** @attribute MarkupExtensionReturnTypeAttribute(System.Object) */ public class NullExtension extends MarkupExtension
MarkupExtensionReturnTypeAttribute(System.Object) public class NullExtension extends MarkupExtension
For XAML information, see x:Null Markup Extension.
This class is a markup extension implementation. Markup extension classes exist mainly to provide infrastructure support for how WPF XAML readers interpret a particular extension. The members that markup extension implementation classes expose are not typically intended to be called from your code. This markup extension class supports the x:Null Markup Extension usage for XAML.
When you set a dependency property value to a null reference (Nothing in Visual Basic), you are not necessarily setting the property to its default value. The default value of a dependency property depends on its dependency property registration. For more information, see ClearValue.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.