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OnViewportOffsetChanged Method

VirtualizingStackPanel.OnViewportOffsetChanged Method

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

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

abstract OnViewportOffsetChanged : 
        oldViewportOffset:Vector * 
        newViewportOffset:Vector -> unit  
override OnViewportOffsetChanged : 
        oldViewportOffset:Vector * 
        newViewportOffset:Vector -> unit

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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5 SP1, 3.0 SP2

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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