淡出淡出的TextBlock(WFP，VB) [英] Fade-out Fade-in for a TextBlock (WFP, VB)

问题描述

例如，我有一个TextBlock，并且想要每5秒更改一次它的Text属性.一切正常，但我想为文本添加淡入淡出效果.
旧文本淡出，新文本淡入.
有人可以帮我吗?

I have a TextBlock and want to change it''s Text property every 5 seconds, for example. Everything''s OK but I want to add fade effects for text.
The old text fades out, the new one fades in.
Can someone help me?

推荐答案

您可以使用几个情节提要.在计时器中调度情节提要，更改测试，然后运行下一个情节提要.

You could use a couple of storyboards. In a timer dispatch the storyboard, change the test and then run the next storyboard.

<Storyboard x:Key="Storyboard1" x:Name="sb1">
    <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(TextElement.Foreground).(SolidColorBrush.Color)" Storyboard.TargetName="textBox1">
        <EasingColorKeyFrame KeyTime="0:0:0.5" Value="White"/>
    </ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Storyboard2" x:Name="sb2">
    <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(TextElement.Foreground).(SolidColorBrush.Color)" Storyboard.TargetName="textBox1">
        <EasingColorKeyFrame KeyTime="0" Value="White"/>
        <EasingColorKeyFrame KeyTime="0:0:0.5" Value="Black"/>
    </ColorAnimationUsingKeyFrames>
</Storyboard>

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