HOW TO：取得動畫屬性的非動畫值
更新：2007 年 11 月
若要取得物件動畫屬性的非動畫值，請使用物件的 GetAnimationBaseValue 方法。UIElement、Animatable 和 ContentElement 各自都有自己的實作。
範例
下列範例會擷取及顯示動畫屬性的非動畫值。
/*
This sample shows how to use the
Animatable.GetAnimationBaseValue and
UIElement.GetAnimationBaseValue methods
to get the non-animated value of an
animated Animatable or UIElement.
*/
using System;
using System.Windows;
using System.Windows.Navigation;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Controls;
using System.Windows.Input;
namespace Microsoft.Samples.Animation.TimingBehaviors
{
public class GetAnimationBaseValueExample : Page {
private RotateTransform animatedRotateTransform;
public GetAnimationBaseValueExample()
{
WindowTitle = "GetAnimationBaseValue Example";
StackPanel myPanel = new StackPanel();
myPanel.Margin = new Thickness(20.0);
// Create a button.
Button animatedButton = new Button();
animatedButton.Content = "Click Me";
animatedButton.Width = 100;
animatedButton.Margin = new Thickness(100);
// Create and animate a RotateTransform and
// apply it to the button's RenderTransform
// property.
animatedRotateTransform = new RotateTransform();
animatedRotateTransform.Angle = 45;
DoubleAnimation angleAnimation =
new DoubleAnimation(0,360, TimeSpan.FromSeconds(5));
angleAnimation.RepeatBehavior = RepeatBehavior.Forever;
animatedRotateTransform.BeginAnimation(
RotateTransform.AngleProperty, angleAnimation);
animatedButton.RenderTransform = animatedRotateTransform;
animatedButton.RenderTransformOrigin = new Point(0.5,0.5);
// 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);
// Handle button clicks.
animatedButton.Click += new RoutedEventHandler(animatedButton_Clicked);
// Add the button to the panel.
myPanel.Children.Add(animatedButton);
this.Content = myPanel;
}
// Display the base value for Button.Width and RotateTransform.Angle.
private void animatedButton_Clicked(object sender, RoutedEventArgs e)
{
Button animatedButton = (Button)sender;
MessageBox.Show("Button width base value: " +
animatedButton.GetAnimationBaseValue(Button.WidthProperty)
+ "\nRotateTransform base value: " +
animatedRotateTransform.GetAnimationBaseValue(RotateTransform.AngleProperty));
}
}
}