c# - 多个 MultiDataTriggers 仅适用于最后一个

Question

在 UserControl 中，我有一个 enum 类型的 DP(eGroupStyle 类型的 GroupStyle)和一个 DP bool 类型 (IsGrouped)。我需要在所有可能的条件下开始一些 Storyboard。但最后一个 MultiDataTrigger 只起作用。我哪里做错了？另外我想知道是否存在一种更简单的方法来考虑这些条件。 (检查一次 IsGrouped。)

C#:

enum eGroupStyle
{
    GroupStyle1,
    GroupStyle2,
    ∙∙∙,
    GroupStyleN,
}

XAML:

<MultiDataTrigger>
    <MultiDataTrigger.Conditions>
        <Condition Binding="{Binding GroupStyle}" Value="GroupStyle1"/>
        <Condition Binding="{Binding IsGrouped}" Value="False"/>
    </MultiDataTrigger.Conditions>
    <MultiDataTrigger.EnterActions>
        <BeginStoryboard  Storyboard="{StaticResource Storyboard_TurnToUnselectedStyle1}"/>
    </MultiDataTrigger.EnterActions>
</MultiDataTrigger>
<MultiDataTrigger>
    <MultiDataTrigger.Conditions>
        <Condition Binding="{Binding GroupStyle}" Value="GroupStyle1"/>
        <Condition Binding="{Binding IsGrouped}" Value="True"/>
    </MultiDataTrigger.Conditions>
    <MultiDataTrigger.EnterActions>
        <BeginStoryboard  Storyboard="{StaticResource Storyboard_TurnToSelectedStyle1}"/>
    </MultiDataTrigger.EnterActions>
</MultiDataTrigger>
<MultiDataTrigger>
    <MultiDataTrigger.Conditions>
        <Condition Binding="{Binding GroupStyle}" Value="GroupStyle2"/>
        <Condition Binding="{Binding IsGrouped}" Value="False"/>
    </MultiDataTrigger.Conditions>
    <MultiDataTrigger.EnterActions>
        <BeginStoryboard  Storyboard="{StaticResource Storyboard_TurnToUnselectedStyle2}"/>
    </MultiDataTrigger.EnterActions>
</MultiDataTrigger>
<MultiDataTrigger>
    <MultiDataTrigger.Conditions>
        <Condition Binding="{Binding GroupStyle}" Value="GroupStyle2"/>
        <Condition Binding="{Binding IsGrouped}" Value="True"/>
    </MultiDataTrigger.Conditions>
    <MultiDataTrigger.EnterActions>
        <BeginStoryboard  Storyboard="{StaticResource Storyboard_TurnToSelectedStyle2}"/>
    </MultiDataTrigger.EnterActions>
</MultiDataTrigger>
∙∙∙
<MultiDataTrigger>
    <MultiDataTrigger.Conditions>
        <Condition Binding="{Binding GroupStyle}" Value="GroupStyleN"/>
        <Condition Binding="{Binding IsGrouped}" Value="False"/>
    </MultiDataTrigger.Conditions>
    <MultiDataTrigger.EnterActions>
        <BeginStoryboard  Storyboard="{StaticResource Storyboard_TurnToUnselectedStyleN}"/>
    </MultiDataTrigger.EnterActions>
</MultiDataTrigger>
<MultiDataTrigger>
    <MultiDataTrigger.Conditions>
        <Condition Binding="{Binding GroupStyle}" Value="GroupStyleN"/>
        <Condition Binding="{Binding IsGrouped}" Value="True"/>
    </MultiDataTrigger.Conditions>
    <MultiDataTrigger.EnterActions>
        <BeginStoryboard  Storyboard="{StaticResource Storyboard_TurnToSelectedStyleN}"/>
    </MultiDataTrigger.EnterActions>
</MultiDataTrigger>

Answer 1

我发现了!我需要在退出操作中删除之前的 Storyboard，如下所示。现在可以了:)

<MultiDataTrigger>
    <MultiDataTrigger.Conditions>
        <Condition Binding="{Binding Path=GroupStyle}" Value="GroupStyle1"/>
        <Condition Binding="{Binding Path=IsGrouped}" Value="False"/>
    </MultiDataTrigger.Conditions>
    <MultiDataTrigger.EnterActions>
        <BeginStoryboard x:Name="BeginStoryboard_TurnToUnselectedStyle1" Storyboard="{StaticResource Storyboard_TurnToUnselectedStyle1}"/>
    </MultiDataTrigger.EnterActions>
    <MultiDataTrigger.ExitActions>
        <RemoveStoryboard BeginStoryboardName="BeginStoryboard_TurnToUnselectedStyle1"/>
    </MultiDataTrigger.ExitActions>
</MultiDataTrigger>