WPF使用故事板放大一个矩形

Question

你好，我有一个 Window>grid>rectangle 命名为 (rect1)

如何使用故事板放大这个

错误：附加信息：不存在解析名称的适用名称范围 'rect1'

private void Window_MouseEnter(object sender, System.Windows.Input.MouseEventArgs e)
    {

        Storyboard buttonEnlargeStoryboard = new Storyboard();
        DoubleAnimation da = new DoubleAnimation();
        da.SetValue(Storyboard.TargetNameProperty, rect1.Name);
        da.BeginTime = new TimeSpan(0);
        da.Duration = TimeSpan.FromSeconds(1);
        buttonEnlargeStoryboard.Children.Add(da);

        buttonEnlargeStoryboard.Begin();



    }

Answer 1

您应该像这样设置宽度和高度属性的动画：

        DoubleAnimation widthAnimation = new DoubleAnimation
        {
            From = 0,
            To = rect1.ActualWidth*2,
            Duration = TimeSpan.FromSeconds(5)
        };

        DoubleAnimation heightAnimation = new DoubleAnimation
        {
            From = 0,
            To = rect1.ActualHeight*2,
            Duration = TimeSpan.FromSeconds(5)
        };

        Storyboard.SetTargetProperty(widthAnimation, new PropertyPath(Rectangle.WidthProperty));
        Storyboard.SetTarget(widthAnimation, rect1);

        Storyboard.SetTargetProperty(heightAnimation, new PropertyPath(Rectangle.HeightProperty));
        Storyboard.SetTarget(heightAnimation, rect1);

        Storyboard buttonEnlargeStoryboard = new Storyboard();
        buttonEnlargeStoryboard.SpeedRatio = 1;
        buttonEnlargeStoryboard.Children.Add(widthAnimation);
        buttonEnlargeStoryboard.Children.Add(heightAnimation);
        buttonEnlargeStoryboard.Begin();

WPF使用故事板放大一个矩形

WPF enlarge a rectangle using storyboard

c#

wpf

storyboard