我怎样才能暂停故事板？ [英] How can I pause a storyboard?

问题描述

这似乎应该是一个没有脑子，但我不能让一个WPF故事板暂停。我叫暂停，并没有任何反应 - 它保持正常动画

This seems like it should be a no-brainer, but I can't get a WPF storyboard to pause. I call Pause and nothing happens -- it keeps right on animating.

下面是一个摄制情况：该动画的宽度按钮。如果您按一下按钮，它调用暂停的故事板。我希望的是，当我按一下按钮，其宽度应不再变化;而不是它的宽度保持正常动画，就好像我从来没有叫暂停。

Here's a repro case: a button that animates its width. If you click the button, it calls Pause on the storyboard. I would expect that, as soon as I click the button, its width should stop changing; instead its width keeps right on animating as if I never called Pause.

NameScope.SetNameScope(this, new NameScope());
var storyboard = new Storyboard();

var button = new Button { Content = "Pause", Name = "pause" };
this.Content = button;
RegisterName(button.Name, button);
var animation = new DoubleAnimation(0, 200, TimeSpan.FromSeconds(5));
Storyboard.SetTargetName(animation, button.Name);
Storyboard.SetTargetProperty(animation,
    new PropertyPath(FrameworkElement.WidthProperty));
storyboard.Children.Add(animation);

button.Click += (sender, e) => { storyboard.Pause(this); };
storyboard.Begin(this);

据我了解的文档，我应该叫暂停（FrameworkElement的）与我传递给相同的参数超载开始，因此，暂停（本）。但我也试过 storyboard.Pause（），与任何变化。我也试过 storyboard.Pause（按钮）只是它的挫折感，再次没有影响。我曾尝试 storyboard.Pause（故事板）和 storyboard.Pause（动画）只是用尽的可能性，但没有一个编译 - 它想要一个FrameworkElement的（或FrameworkContentElement上）

From what I understand of the docs, I should call the Pause(FrameworkElement) overload with the same parameter I passed to Begin, hence the Pause(this) above. But I've also tried storyboard.Pause(), with no change in behavior. I also tried storyboard.Pause(button) just for the heck of it, again with no effect. I would have tried storyboard.Pause(storyboard) and storyboard.Pause(animation) just to exhaust the possibilities, but neither one compiles -- it wants a FrameworkElement (or FrameworkContentElement).

我如何获得storyboad暂停？

How do I get the storyboad to pause?

推荐答案

我不知道为什么你正在使用weired SetNameScope等清除您的code，我可以让它工作：

I don't know why you are using that weired SetNameScope etc. Clearing your code i could make it work:

        //NameScope.SetNameScope(this, new NameScope());
        var storyboard = new Storyboard();

        var button = new Button { Content = "Pause", Name = "pause" };
        this.Content = button;
        //RegisterName(button.Name, button);
        var animation = new DoubleAnimation(0, 200, TimeSpan.FromSeconds(5));
        Storyboard.SetTarget(animation, button);
        Storyboard.SetTargetProperty(animation,
            new PropertyPath(FrameworkElement.WidthProperty));
        storyboard.Children.Add(animation);

        button.Click += (sender, e) => { storyboard.Pause(); };
        storyboard.Begin();

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