动态创建storyboard

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public void Create_And_Run_Animation(object sender, EventArgs e)

{

Ellipse ellipse = new Ellipse();

ellipse.Width = 20;

ellipse.Height = 20;

Color myColor = Color.FromArgb(255, 255, 0, 0);

SolidColorBrush myBrush = new SolidColorBrush();

myBrush.Color = myColor;

ellipse.Fill = myBrush;

LayoutRoot.Children.Add(ellipse);

Duration duration = new Duration(new TimeSpan(0,0,0,1));

DoubleAnimation myDoubleAnimation1 = new DoubleAnimation();

DoubleAnimation myDoubleAnimation2 = new DoubleAnimation();

myDoubleAnimation1.Duration = duration;

myDoubleAnimation2.Duration = duration;

Storyboard sb = new Storyboard();

sb.Duration = duration;

sb.AutoReverse = true;

sb.RepeatBehavior = RepeatBehavior.Forever;

sb.Children.Add(myDoubleAnimation1);

sb.Children.Add(myDoubleAnimation2);

Storyboard.SetTarget(myDoubleAnimation1, ellipse);

Storyboard.SetTarget(myDoubleAnimation2, ellipse);

Storyboard.SetTargetProperty(myDoubleAnimation1, "Width");

Storyboard.SetTargetProperty(myDoubleAnimation2, "Height");

myDoubleAnimation1.From = 20;

myDoubleAnimation2.From = 20;

myDoubleAnimation1.To = 50;

myDoubleAnimation2.To = 50;

LayoutRoot.Resources.Add(sb);

sb.Begin();

}