Question

我为包装面板上的按钮编写此代码。我想用不透明动画显示它们，但是当编译器到达s.begin（）;时，它不起作用，并向我显示错误。请指导我修复此代码。我在互联网上其他代码的帮助下编写了它们。一件事是因为我不知道如何延迟动画，所以我写那些ifs。

BindingContext

错误是： System.InvalidOperationException：'未为'System.Windows.Media.Animation.DoubleAnimation'指定目标。'

Answer 1

private void AccountBtn_Loaded(object sender, RoutedEventArgs e)
{
    DoubleAnimation Opacityanimation = new DoubleAnimation
    {
        From = 0,
        To = 100,
        Duration = TimeSpan.FromSeconds(90)
    };
    Storyboard sb = new Storyboard();
    Storyboard.SetTargetProperty(Opacityanimation, new PropertyPath(Ellipse.OpacityProperty));
    Storyboard.SetTarget(Opacityanimation, AccountBtn);
    Storyboard s = new Storyboard();
    s.Children.Add(Opacityanimation);
    s.Begin();
}

Answer 2

我为自己的问题找到了解决方案，那就是我们可以在每个控件的加载事件上使用这些代码，例如我在此处编写的代码，并且可以通过写ifs来延迟执行。

    private void AccountBtn_Loaded(object sender, RoutedEventArgs e)
    {
        DoubleAnimation Opacityanimation = new DoubleAnimation
        {
            From = 0,
            To = 100,
            Duration = TimeSpan.FromSeconds(90)
        };
        Storyboard sb = new Storyboard();
        Storyboard.SetTargetProperty(Opacityanimation, new PropertyPath(Ellipse.OpacityProperty));
        Storyboard.SetTarget(Opacityanimation, AccountBtn);
        Storyboard s = new Storyboard();
        s.Children.Add(Opacityanimation);
        s.Begin();
    }

某些按钮的动画延迟

2 个答案: