我可以使用以下代码淡入/淡出
<Storyboard x:Name="EnterStoryboard">
<FadeOutThemeAnimation Storyboard.TargetName="PauseImage" />
</Storyboard>
<Storyboard x:Name="ExitStoryboard">
<FadeInThemeAnimation Storyboard.TargetName="PauseImage" />
</Storyboard>
褪色:
EnterStoryboard.Begin();
淡出:
ExitStoryboard.Begin();
如果元素从头开始隐藏,我怎么能淡化(我试图设置opacity=0
和visibility=collapsed
)。
修改
基于AstiK解决方案,这是新的Storyboard
s(而不是内置的FadeInThemeAnimation
/ FadeOutThemeAnimation
)
<Storyboard x:Name="EnterStoryboard">
<DoubleAnimation BeginTime="00:00:00" Storyboard.TargetProperty="(UIElement.Opacity)" From="0" To="1" Duration="00:00:00.3" Storyboard.TargetName="Image"/>
</Storyboard>
<Storyboard x:Name="ExitStoryboard">
<DoubleAnimation BeginTime="00:00:00" Storyboard.TargetProperty="(UIElement.Opacity)" From="1" To="0" Duration="00:00:00.3" Storyboard.TargetName="Image"/>
</Storyboard>
答案 0 :(得分:1)
在您的原始方法中,您应该从头开始保留Opacity ="0"
和Visibility="Visible"
。我想你正在寻找这样的东西:
<Grid Height="50" Width="100" Background="Red" Opacity="0">
<Grid.Style>
<Style TargetType="Grid">
<Style.Triggers>
<EventTrigger RoutedEvent="MouseEnter">
<BeginStoryboard>
<Storyboard>
<Storyboard >
<DoubleAnimation BeginTime="00:00:00" Storyboard.TargetProperty="(UIElement.Opacity)" From="0" To="1" Duration="00:00:03"/>
</Storyboard>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Style.Triggers>
</Style>
</Grid.Style>
</Grid>
答案 1 :(得分:0)
使用它:
<Storyboard x:Name="EnterStoryboard">
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="PauseImage">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<FadeOutThemeAnimation Storyboard.TargetName="PauseImage" />
设置为以ExitStoryboard