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
