IKeyFrameAnimation Interface
An IKeyFrameAnimation interface implementation provides untyped access to key frame collection members.
Assembly: PresentationCore (in PresentationCore.dll)
This example shows one way to apply an animation to a property without using a Storyboard.
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This functionality is not available in Extensible Application Markup Language (XAML). For information about animating a property in XAML, see How to: Animate a Property by Using a Storyboard. |
To apply a local animation to a property, use the BeginAnimation method. This method takes two parameters: a DependencyProperty that specifies the property to animate, and the animation to apply to that property.
The following example shows how to animate the width and background color of a Button.
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' '''This sample demonstrates how to apply non-storyboard animations to a property. '''To animate in markup, you must use storyboards. ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Imports System Imports System.Windows Imports System.Windows.Navigation Imports System.Windows.Media Imports System.Windows.Media.Animation Imports System.Windows.Shapes Imports System.Windows.Controls Namespace Microsoft.Samples.Animation.LocalAnimations ' Create the demonstration. Public Class LocalAnimationExample Inherits Page Public Sub New() WindowTitle = "Animate Property Example" Dim myStackPanel As New StackPanel() myStackPanel.Margin = New Thickness(20) ' Create and set the Button. Dim aButton As New Button() aButton.Content = "A Button" ' Animate the Button's Width. Dim myDoubleAnimation As New DoubleAnimation() myDoubleAnimation.From = 75 myDoubleAnimation.To = 300 myDoubleAnimation.Duration = New Duration(TimeSpan.FromSeconds(5)) myDoubleAnimation.AutoReverse = True myDoubleAnimation.RepeatBehavior = RepeatBehavior.Forever ' Apply the animation to the button's Width property. aButton.BeginAnimation(Button.WidthProperty, myDoubleAnimation) ' Create and animate a Brush to set the button's Background. Dim myBrush As New SolidColorBrush() myBrush.Color = Colors.Blue Dim myColorAnimation As New ColorAnimation() myColorAnimation.From = Colors.Blue myColorAnimation.To = Colors.Red myColorAnimation.Duration = New Duration(TimeSpan.FromMilliseconds(7000)) myColorAnimation.AutoReverse = True myColorAnimation.RepeatBehavior = RepeatBehavior.Forever ' Apply the animation to the brush's Color property. myBrush.BeginAnimation(SolidColorBrush.ColorProperty, myColorAnimation) aButton.Background = myBrush ' Add the Button to the panel. myStackPanel.Children.Add(aButton) Me.Content = myStackPanel End Sub End Class End Namespace
For the complete sample, see Local Animations Sample.
A variety of animation classes in the System.Windows.Media.Animation namespace exist for animating different types of properties. For more information about animating properties, see Animation Overview. For more information about dependency properties (the type of properties that are shown in these examples) and their features, see Dependency Properties Overview.
There are other ways to animate without using Storyboard objects; for more information, see Property Animation Techniques Overview.
More Code
| How to: Animate a Property by Using a Storyboard | This example shows how to use a Storyboard to animate properties. To animate a property by using a Storyboard, create an animation for each property that you want to animate and also create a Storyboard to contain the animations. |
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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