ColorAnimation在矩形中改变颜色

Question

我想要改变长方形的颜色，但是，颜色不会改变。问题在哪里？

ColorAnimation col = new ColorAnimation();
col.From = Colors.Aqua;
col.To = Colors.PaleGreen;
col.Duration = new Duration(TimeSpan.FromSeconds(1));

Storyboard zgo = new Storyboard();
Storyboard.SetTarget(col, c);
Storyboard.SetTargetProperty(col,
           new PropertyPath(SolidColorBrush.ColorProperty));
zgo.Children.Add(col);
zgo.Begin();

这是XAML：

<Rectangle Name="rec"
    Height="100" Width="200"
    HorizontalAlignment="Left" VerticalAlignment="Top"
    Stroke="Black"
    MouseLeftButtonDown="rec_MouseLeftButtonDown">
    <Rectangle.Fill>
        <SolidColorBrush x:Name="c"></SolidColorBrush>
    </Rectangle.Fill>
</Rectangle>

Answer 1

通过调用Animatable.BeginAnimation直接运行动画

var colorAnimation = new ColorAnimation(
    Colors.Aqua, Colors.PaleGreen, TimeSpan.FromSeconds(1));

c.BeginAnimation(SolidColorBrush.ColorProperty, colorAnimation);

您仍然可以通过使用矩形作为动画的目标，使用Fill.Color作为目标属性来完成这一任务：：

Storyboard storyboard = new Storyboard();
Storyboard.SetTarget(colorAnimation, rec);
Storyboard.SetTargetProperty(colorAnimation, new PropertyPath("Fill.Color"));
storyboard.Children.Add(colorAnimation);
storyboard.Begin();