我希望动画在布尔CanAnimate变为false时停止。它从true开始,那么当CanAnimate为假时我怎么告诉它停止? (CanAnimate bool设置在SelectedItem setter中)
<Border BorderBrush="Black" BorderThickness="2" Margin="1" Name="ReviewNote">
<Border.Style>
<Style TargetType="Border">
<Style.Triggers>
<DataTrigger Binding="{Binding CanAnimate}" Value="True">
<DataTrigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetProperty="(Border.Opacity)"
From="1.0" To="0.0" AutoReverse="True"
RepeatBehavior="Forever" />
</Storyboard>
</BeginStoryboard>
</DataTrigger.EnterActions>
</DataTrigger>
</Style.Triggers>
</Style>
</Border.Style>
<TextBlock/>
</Border>
答案 0 :(得分:2)
您可以尝试使用DataTrigger上的ExitActions来停止动画,方法是覆盖另一个动画。例如:
<DataTrigger Binding="{Binding CanAnimate}" Value="True">
<DataTrigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetProperty="(Border.Opacity)"
From="1.0" To="0.0" AutoReverse="True"
RepeatBehavior="Forever" />
</Storyboard>
</BeginStoryboard>
</DataTrigger.EnterActions>
<DataTrigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetProperty="(Border.Opacity)"
From="0.0" To="0.0" Duration="0:0:0.0" FillBehavior="HoldEnd" />
</Storyboard>
</BeginStoryboard>
</DataTrigger.ExitActions>
</DataTrigger>
或者,有一种方法可以按名称停止XAML中的故事板,同样可以使用ExitActions。 This previous question显示了方式。
希望这有帮助!