使用 WPF 4 将视觉状态添加到嵌套控件
我想知道是否可以将视觉状态（在 WPF 4 中）应用于嵌套控件。我有一个堆栈面板，其中包含一些我想根据变化状态进行更改的元素。
<StackPanel x:Name="panPremioRaggiunto">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup Name="StatiComuni">
<VisualState Name="PremioNonRaggiunto" />
<VisualState Name="PremioRaggiunto">
<Storyboard>
<ColorAnimation Storyboard.TargetName="lblPremioRaggiunto" Storyboard.TargetProperty="Foreground" To="Green" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<TextBlock x:Name="lblPremioRaggiunto">TEXT</TextBlock>
</StackPanel>
当我尝试使用此代码更改整个堆栈面板的状态时，
VisualStateManager.GoToState(panPremioRaggiunto, "PremioRaggiunto", False)
没有任何反应：名为 lblPremioRaggiunto 的嵌套文本块不会相应地更改其颜色。我可以以这种方式应用视觉状态吗？
谢谢， 达尼洛.
I'd like to know if is it possible to apply a Visual State (in WPF 4) to nested controls. I've got a stack panel that contains some elements I'd like to change according to variation state.
<StackPanel x:Name="panPremioRaggiunto">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup Name="StatiComuni">
<VisualState Name="PremioNonRaggiunto" />
<VisualState Name="PremioRaggiunto">
<Storyboard>
<ColorAnimation Storyboard.TargetName="lblPremioRaggiunto" Storyboard.TargetProperty="Foreground" To="Green" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<TextBlock x:Name="lblPremioRaggiunto">TEXT</TextBlock>
</StackPanel>
When I try to change the state of entire stack panel with this code
VisualStateManager.GoToState(panPremioRaggiunto, "PremioRaggiunto", False)
nothing happens: nested textblock named lblPremioRaggiunto don't change his color according. Can I apply a visual state in this manner?
Thanks,
Danilo.
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评论（2）
是的，
VisualStateManager可以更改任何控件的状态。您的代码肯定还有其他问题。Yes,
VisualStateManagercan change the state of any control. You must have some other issue with your code.已解决的问题：视觉状态是在控件模板外部定义的，因此我必须使用 VisualStateManager.GoToElementState 而不是 GoToState。
Fixed issue: visual states are defined outside a control template so I have to use VisualStateManager.GoToElementState instead of GoToState.