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FrameworkElement.SizeChanged Event

Occurs when either the ActualHeight or the ActualWidth properties change value on this element.

Namespace:  System.Windows
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
public event SizeChangedEventHandler SizeChanged
<object SizeChanged="SizeChangedEventHandler" .../>

Identifier field

SizeChangedEvent

Routing strategy

Direct

Delegate

SizeChangedEventHandler

Direct routed events do not follow a route, they are only handled within the same element on which they are raised. Direct routed events do support other routed event behavior: they support an accessible handlers collection, and can be used as an EventTrigger in a style.

The layout system reads properties within the SizeChangedEventArgs argument class of this event, to determine whether the reported size changes should be considered significant. This allows the layout system or your control-specific layout implementations to avoid forcing a layout change due to visually imperceptible differences between old and new height or width values. The imperceptible differences might be due to rounding or same-result calculations of a floating-point data types.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, 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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