带有图像的 WPF 故事板，当它可见时启动板

Question

我对 WPF 很陌生，并尝试了一些带有情节提要的东西，我想做的是在情节提要第一次可见时启动它..（因为它是向导中的一个步骤，而不是加载时可见）

 <Grid Name="GridLoading" Visibility="Hidden" >

        <Image>
            <Image.Triggers>
                <EventTrigger RoutedEvent="Loaded">

                    <BeginStoryboard >
                        <Storyboard Name="LoadingStoryBoard" Completed="LoadingStoryBoard_Completed">
                            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Source"
                                               Duration="0:0:4">
                                <DiscreteObjectKeyFrame KeyTime="0:0:0">
                                    <DiscreteObjectKeyFrame.Value>
                                        <BitmapImage UriSource="C:\...\2a-loading.jpg"/>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                                <DiscreteObjectKeyFrame KeyTime="0:0:1">
                                    <DiscreteObjectKeyFrame.Value>
                                        <BitmapImage UriSource="C:\...\2b-loading.jpg"/>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                                <DiscreteObjectKeyFrame KeyTime="0:0:2">
                                    <DiscreteObjectKeyFrame.Value>
                                        <BitmapImage UriSource="C:\...\2c-loading.jpg"/>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                                <DiscreteObjectKeyFrame KeyTime="0:0:3">
                                    <DiscreteObjectKeyFrame.Value>
                                        <BitmapImage UriSource="C:\...\2d-loading.jpg"/>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                            </ObjectAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Image.Triggers>
        </Image>

    </Grid>

任何指针都非常感谢

Answer 1

这是重复的：Activate Storyboard on Visibility Changed

取自该问题中的accepted answer：

<Style x:Key="AnimationImageStyle" TargetType="{x:Type Image}">
<Style.Triggers>
    <DataTrigger Binding="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=IsVisible}" 
                 Value="True">

        <DataTrigger.EnterActions>
            <BeginStoryboard>
                <Storyboard>
                    <DoubleAnimation Storyboard.TargetProperty="Opacity"
                                     From="1.0" To="0.1"
                                     Duration="0:0:0.5"
                                     AutoReverse="True"
                                     RepeatBehavior="0:0:2" />
                </Storyboard>
            </BeginStoryboard>
        </DataTrigger.EnterActions>
    </DataTrigger>
</Style.Triggers>

将<DataTrigger.EnterActions> 中的情节提要替换为您的情节提要。

向更有经验的用户提出的问题：如何将帖子标记为重复？还是仅适用于模组？