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UIElement.BeginAnimation Method (DependencyProperty, AnimationTimeline, HandoffBehavior)

Starts a specific animation for a specified animated property on this element, with the option of specifying what happens if the property already has a running animation.

Namespace:  System.Windows
Assembly:  PresentationCore (in PresentationCore.dll)

public void BeginAnimation(
	DependencyProperty dp,
	AnimationTimeline animation,
	HandoffBehavior handoffBehavior
)

Parameters

dp
Type: System.Windows.DependencyProperty

The property to animate, which is specified as the dependency property identifier.

animation
Type: System.Windows.Media.Animation.AnimationTimeline

The timeline of the animation to be applied.

handoffBehavior
Type: System.Windows.Media.Animation.HandoffBehavior

A value of the enumeration that specifies how the new animation interacts with any current (running) animations that are already affecting the property value.

Implements

IAnimatable.BeginAnimation(DependencyProperty, AnimationTimeline, HandoffBehavior)

When you check whether a property is animated, note that the animation will begin and be considered animated when the first frame beyond the non-animated starting point is rendered.

If the BeginTime for animation is null, then any current animations are removed and the current value of the property is held.

If the entire animation value is null, all animations are removed from the property and the property value reverts to its base value. However, the originally associated animation timeline is not stopped. Any other animations assigned to that timeline will continue to run.

The following example implements a handler that obtains an existing animation from a resource and then calls BeginAnimation with a specified handoff behavior.

private void myFrameNavigated(object sender, NavigationEventArgs args)
{
    DoubleAnimation myFadeInAnimation = (DoubleAnimation)this.Resources["MyFadeInAnimationResource"];
    myFrame.BeginAnimation(Frame.OpacityProperty, myFadeInAnimation, HandoffBehavior.SnapshotAndReplace);
}

.NET Framework

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

.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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