WPF-同步动画

发布于 2024-08-20 03:35:20 字数 415 浏览 1 评论 0原文

我有这样的事情：

scaleTransform.BeginAnimation(ScaleTransform.ScaleXProperty, shrinkAnimation);
scaleTransform.BeginAnimation(ScaleTransform.ScaleYProperty, shrinkAnimation);
MyDialog.Show();

动画并行正确运行（x 和 y 一起收缩），但由于 BeginAnimation 是异步调用，因此 Show() 方法在动画仍在运行（假设 shrinkAnimation 运行 1 秒）。

如何在调用 Show() 之前等待动画完成？

谢谢！

原文

I have something this:

scaleTransform.BeginAnimation(ScaleTransform.ScaleXProperty, shrinkAnimation);
scaleTransform.BeginAnimation(ScaleTransform.ScaleYProperty, shrinkAnimation);
MyDialog.Show();

The animations run correctly in parallel (x and y shrink together), but because BeginAnimation is an asynchronous call, the Show() method gets executed while the animation is still running (suppose shrinkAnimation runs for 1 second).

How can I wait for animations to complete before calling Show()?

Thanks!

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十秒萌定你 2024-08-27 03:35:20

您可以使用具有已完成事件的 Storyboard 来代替 BeginAnimation 方法。这是一个设置不透明度的示例，但它是相同的概念：

DoubleAnimation animation = new DoubleAnimation(0.0, new Duration(TimeSpan.FromSeconds(1.0)));

Storyboard board = new Storyboard();
board.Children.Add(animation);

Storyboard.SetTarget(animation, MyButton);
Storyboard.SetTargetProperty(animation, new PropertyPath("(Opacity)"));

board.Completed += delegate
{
    MessageBox.Show("DONE!");
};

board.Begin();

You can use a Storyboard, which has a completed event, instead of that BeginAnimation method. Here's an example, setting opacity, but it's the same concept:

DoubleAnimation animation = new DoubleAnimation(0.0, new Duration(TimeSpan.FromSeconds(1.0)));

Storyboard board = new Storyboard();
board.Children.Add(animation);

Storyboard.SetTarget(animation, MyButton);
Storyboard.SetTargetProperty(animation, new PropertyPath("(Opacity)"));

board.Completed += delegate
{
    MessageBox.Show("DONE!");
};

board.Begin();

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