當(dāng)需要集合里面某個(gè)數(shù)據(jù)變化的時(shí)候進(jìn)行動(dòng)畫，用到了DataTrigger,其中可以用到DataTrigger.EnterActions來實(shí)現(xiàn)。

與之配對的有一個(gè)<DataTrigger.ExitActions>。

EnterActions關(guān)于其中msdn解釋為：Gets a collection of TriggerAction objects to apply when the trigger object becomes active。沒看明白？

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??????????????? <DataTrigger Binding="{Binding IsShow}"? Value="True">
??????????????????? <DataTrigger.EnterActions>
??????????????????????? <BeginStoryboard Storyboard="{StaticResource SB_Stop}"></BeginStoryboard>???????????????????????
??????????????????? </DataTrigger.EnterActions>
??????????????????? <DataTrigger.ExitActions>
??????????????????????? <BeginStoryboard Storyboard="{StaticResource SB_Stop}"></BeginStoryboard>
??????????????????? </DataTrigger.ExitActions>
??????????????? </DataTrigger>

剛開始我以為綁定了以上還應(yīng)該進(jìn)行對應(yīng)當(dāng)返回動(dòng)作如下：

??????????????? <DataTrigger Binding="{Binding IsShow}"? Value="false">
??????????????????? <DataTrigger.EnterActions>
??????????????????????? <BeginStoryboard Storyboard="{StaticResource SB_Stop}"></BeginStoryboard>???????????????????????
??????????????????? </DataTrigger.EnterActions>
??????????????????? <DataTrigger.ExitActions>
??????????????????????? <BeginStoryboard Storyboard="{StaticResource SB_Stop}"></BeginStoryboard>
??????????????????? </DataTrigger.ExitActions>
??????????????? </DataTrigger>

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后面經(jīng)過實(shí)驗(yàn)，只進(jìn)行第一次即可。IsShow是一個(gè)屬性，bool類型。理解為：當(dāng)true即enter,false的時(shí)候就Exit

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DataTrigger 一些新知識