FrameworkElement.SizeChanged FrameworkElement.SizeChanged FrameworkElement.SizeChanged FrameworkElement.SizeChanged Event

Definition

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

public:
 event System::Windows::SizeChangedEventHandler ^ SizeChanged;
public event System.Windows.SizeChangedEventHandler SizeChanged;
member this.SizeChanged : System.Windows.SizeChangedEventHandler 
Public Custom Event SizeChanged As SizeChangedEventHandler 

Remarks

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.

Routed Event Information

Identifier field SizeChangedEvent
Routing strategy Direct
Delegate SizeChangedEventHandler

Applies to

See also