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VirtualizingStackPanel.OnViewportOffsetChanged Method

Updated: July 2008

Called when the offset of the viewport changes as a user scrolls through content.

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

protected virtual void OnViewportOffsetChanged(
	Vector oldViewportOffset,
	Vector newViewportOffset
)
You cannot use methods in XAML.

Parameters

oldViewportOffset
Type: System.Windows.Vector

The old offset of the viewport.

newViewportOffset
Type: System.Windows.Vector

The new offset of the viewport

Use this method, in a derived class, to detect and respond to changes in the viewport location.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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 SP1, 3.0 SP2

Date

History

Reason

July 2008

Added topic for new member.

SP1 feature change.

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