Silverlight开发历程—C#代码添加动画

XAML：

<Canvas x:Name="LayoutRoot" Background="White">
<Canvas x:Name="canvas_parent" />
</Canvas>

C#：
public AnimationWithCSharp()
{
InitializeComponent();
//创建椭圆对象
Ellipse ellipse = new Ellipse();
ellipse.Width = 150;
ellipse.Height = 150;
ellipse.Fill = new SolidColorBrush(Color.FromArgb(255, 255, 0, 0));
//添加到Canvas中
canvas_parent.Children.Add(ellipse);
//创建Double动画
DoubleAnimation animation1 = new DoubleAnimation();
DoubleAnimation animation2 = new DoubleAnimation();
DoubleAnimation animation3 = new DoubleAnimation();
//设置动画的From To属性
animation1.From = 20;
animation1.To = 400;
animation2.From = 20;
animation2.To = 250;
animation3.From = 30;
animation3.To = 150;
//设置动画时间
animation1.Duration = new Duration(new TimeSpan(0, 0, 0, 1));
animation2.Duration = new Duration(new TimeSpan(0, 0, 0, 1));
animation3.Duration = new Duration(new TimeSpan(0, 0, 0, 1));
//创建故事面板
Storyboard sb = new Storyboard();
//设置故事面板的时间
sb.Duration = new Duration(new TimeSpan(0, 0, 0, 1));
//设置动画是否重复播放
sb.RepeatBehavior = RepeatBehavior.Forever;
//添加三个动画到故事面板中
sb.Children.Add(animation1);
sb.Children.Add(animation2);
sb.Children.Add(animation3);
//设置动画的作用目标
Storyboard.SetTarget(animation1, ellipse);
Storyboard.SetTarget(animation2, ellipse);
Storyboard.SetTarget(animation3, ellipse);
//设置动画作用属性
Storyboard.SetTargetProperty(animation1,new PropertyPath("(Canvas.Left)"));
Storyboard.SetTargetProperty(animation2, new PropertyPath("(Canvas.Top)"));
Storyboard.SetTargetProperty(animation3, new PropertyPath("Height"));
//添加故事板到，Canvas中
canvas_parent.Resources.Add("storyboard", sb);
//开始播放动画
sb.Begin();
}运行结果：会有一个圆在不停的变换形状态和位置。