VirtualizingStackPanel.OnViewportSizeChanged Method

Called when the size of the viewport changes.

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

'Declaration
Protected Overridable Sub OnViewportSizeChanged ( _
	oldViewportSize As Size, _
	newViewportSize As Size _
)

Parameters

oldViewportSize
Type: System.Windows.Size

The old size of the viewport.

newViewportSize
Type: System.Windows.Size

The new size of the viewport.

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

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5 SP1, 3.0 SP2

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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