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UIElement.BeginAnimation Method (DependencyProperty, AnimationTimeline)

Starts an animation for a specified animated property on this element.

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

public void BeginAnimation (
	DependencyProperty dp,
	AnimationTimeline animation
)
public final void BeginAnimation (
	DependencyProperty dp, 
	AnimationTimeline animation
)
public final function BeginAnimation (
	dp : DependencyProperty, 
	animation : AnimationTimeline
)
You cannot use methods in XAML.

Parameters

dp

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

animation

The timeline of the animation to start.

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 a null reference (Nothing in Visual Basic), then any current animations are removed and the current value of the property is held.

If the entire animation value is a null reference (Nothing in Visual Basic), 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 creates an animation, assigns it, and then calls BeginAnimation to start it.

// Animate the button's width.
DoubleAnimation widthAnimation = 
    new DoubleAnimation(120, 300, TimeSpan.FromSeconds(5));
widthAnimation.RepeatBehavior = RepeatBehavior.Forever;
widthAnimation.AutoReverse = true;
animatedButton.BeginAnimation(Button.WidthProperty, widthAnimation);

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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