VirtualizingPanel Class

Provides a framework for Panel elements that virtualize their child data collection. This is an abstract class.

Namespace: System.Windows.Controls
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:

public abstract class VirtualizingPanel : Panel
public abstract class VirtualizingPanel extends Panel
public abstract class VirtualizingPanel extends Panel
This class is abstract; see Inheritance Hierarchy for derived non-abstract classes usable in XAML.

In this context, "virtualize" refers to a technique by which a subset of user interface (UI) elements are generated from a larger number of data items based on which items are visible on the screen. It is intensive, both in terms of memory and processor, to generate a large number of UI elements when only a few may be on the screen at a given time. VirtualizingStackPanel Through functionality that is provided by VirtualizingPanel, VirtualizingStackPanel calculates visible items and works with the ItemContainerGenerator from an ItemsControl (such as ListBox or ListView) to only create UI elements for visible items.

The following example demonstrates how to use the derived VirtualizingStackPanel class in Extensible Application Markup Language (XAML).

<StackPanel DataContext="{Binding Source={StaticResource Leagues}}">
    <TextBlock Text="{Binding XPath=@name}" FontFamily="Arial" FontSize="18" Foreground="Black"/>
        <ListBox VirtualizingStackPanel.IsVirtualizing="True" 
                 ItemsSource="{Binding XPath=Team}" 
                 ItemTemplate="{DynamicResource NameDataStyle}"/>      


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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.

.NET Framework

Supported in: 3.0

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