在WPF / MVVM视图模型开始动画 [英] Starting an animation from the ViewModel in WPF/MVVM

问题描述

我正在写一个应用MVVM并已开始投入几动画。我想呼吁的ViewModel东西开始故事板。 这个博客有前途的方法给它，但它实际上并没有工作。该IDChanged处理程序永远不会触发出于某种原因。

I'm writing a MVVM app and have started putting in a few animations. I want to call something on the ViewModel which starts the a storyboard. This blog had a promising approach to it, but it doesn't actually work. The IDChanged handler never fires for some reason.

我还发现，你可以在EventTriggers启动动画，但我不知道如何提高一个在视图模型。

I also found that you could start animations on EventTriggers, but I don't know how to raise one on the ViewModel.

推荐答案

我最终加入AnimationStarted事件对我的ViewModel有什么动画是一个关键的字符串。然后在我编程方式创建动画视图，订阅AnimationStarted事件，踢适当的动画关闭时触发。

I ended up adding an AnimationStarted event to my ViewModel with a key string for what animation it is. Then on the view I create the animation programmatically, subscribe to the AnimationStarted event, and kick the appropriate animation off when it fires.

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