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Silverlight 代码创建动画原创示例

代码中使用了 C# 3.0 语法

效果是一个红色矩形从右下角移动到左上角

仅仅是示例，演示如何在代码中动态创建动画

MainPage.xaml

<UserControl x:Class="Hongcing.Silverlight.Create_And_Run_Animation"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Canvas Loaded="LayoutRoot_Loaded" />
</UserControl>

MainPage.xaml.cs

 1 using System;
 2  using System.Windows;
 3  using System.Windows.Controls;
 4  using System.Windows.Media;
 5 using System.Windows.Media.Animation;
 6 using System.Windows.Shapes;
 7 
 8 namespace Hongcing.Silverlight
 9 {
10     public partial class Create_And_Run_Animation : UserControl
11     {
12         public Create_And_Run_Animation()
13         {
14             InitializeComponent();
15         }
16 
17         private void LayoutRoot_Loaded(object sender, RoutedEventArgs e)
18         {
19             var redRectangle = new Rectangle
20             {
21                 Width = 300,
22                 Height = 200,
23                 Fill = new SolidColorBrush(Colors.Red),
24                 Stroke = new SolidColorBrush(Colors.Black)
25             };
26 
27             (sender as Panel).Children.Add(redRectangle);
28 
29             var leftAnimation = new DoubleAnimation
30             {
31                 Duration = new Duration(TimeSpan.FromSeconds(5)),
32                 From = 700,
33                 To = 0
34             };
35 
36             var topAnimation = new DoubleAnimation
37             {
38                 Duration = leftAnimation.Duration,
39                 From = 350,
40                 To = 0
41             };
42 
43             Storyboard.SetTarget(leftAnimation, redRectangle);
44             Storyboard.SetTarget(topAnimation, redRectangle);
45 
46             //属性路径也可以用 new PropertyPath("(Canvas.Left)")、new PropertyPath("(Canvas.Top)")
47             Storyboard.SetTargetProperty(leftAnimation, new PropertyPath(Canvas.LeftProperty));
48             Storyboard.SetTargetProperty(topAnimation, new PropertyPath(Canvas.TopProperty));
49 
50             //此处没有添加到资源中，而是直接启动动画。
51             new Storyboard { Children = { leftAnimation, topAnimation } }.Begin();
52         }
53     }
54 }
55