大家好，我有一个场景，我想切换 4 个不同内容控件的可见性。我设置了不透明度的视觉状态，并根据每个给定的状态折叠（参见代码。）我想做的是将视觉状态绑定到我的 Enum 类型的视图模型的属性。我尝试使用 DataStateBehavior，但它需要 true/false，这对我不起作用。所以我尝试了 DataStateSwitchBehavior，据我所知，它似乎完全被 WPF4 破坏了。有没有更好的方法来做到这一点？如果需要，我真的对不同的方法持开放态度，但我真的很想将这个枚举保留在等式中。
编辑：
代码不应该太重要，我只需要知道这个问题是否有众所周知的解决方案。
<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:Custom="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
xmlns:ee="http://schemas.microsoft.com/expression/2010/effects"
xmlns:customBehaviors="clr-namespace:SEL.MfgTestDev.ESS.Behaviors"
x:Class="SEL.MfgTestDev.ESS.View.PresenterControl"
mc:Ignorable="d"
d:DesignHeight="624"
d:DesignWidth="1104"
d:DataContext="{Binding ApplicationViewModel, Mode=OneWay, Source={StaticResource Locator}}">
<Grid>
<Grid.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Layout/TerminalViewTemplate.xaml"/>
<ResourceDictionary Source="Layout/DebugViewTemplate.xaml"/>
<ResourceDictionary Source="Layout/ProgressViewTemplate.xaml"/>
<ResourceDictionary Source="Layout/LoadoutViewTemplate.xaml"/>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Grid.Resources>
<Custom:Interaction.Behaviors>
<customBehaviors:DataStateSwitchBehavior Binding="{Binding ApplicationViewState}">
<customBehaviors:DataStateSwitchCase State="LoadoutState" Value="Loadout"/>
</customBehaviors:DataStateSwitchBehavior>
</Custom:Interaction.Behaviors>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="ApplicationStates" ei:ExtendedVisualStateManager.UseFluidLayout="True">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:1">
<VisualTransition.GeneratedEasingFunction>
<SineEase EasingMode="EaseInOut"/>
</VisualTransition.GeneratedEasingFunction>
<ei:ExtendedVisualStateManager.TransitionEffect>
<ee:SmoothSwirlGridTransitionEffect/>
</ei:ExtendedVisualStateManager.TransitionEffect>
</VisualTransition>
</VisualStateGroup.Transitions>
<VisualState x:Name="LoadoutState">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="LoadoutPage">
<EasingDoubleKeyFrame KeyTime="0" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="LoadoutPage">
<DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="ProgressState">
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="ProgressPage">
<EasingDoubleKeyFrame KeyTime="0" Value="1"/>
</DoubleAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="ProgressPage">
<DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="DebugState">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="DebugPage">
<DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="DebugPage">
<EasingDoubleKeyFrame KeyTime="0" Value="1"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="TerminalState">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="TerminalPage">
<DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="TerminalPage">
<EasingDoubleKeyFrame KeyTime="0" Value="1"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentControl x:Name="LoadoutPage" ContentTemplate="{StaticResource LoadoutViewTemplate}" Opacity="0" Content="{Binding}" Visibility="Collapsed"/>
<ContentControl x:Name="ProgressPage" ContentTemplate="{StaticResource ProgressViewTemplate}" Opacity="0" Content="{Binding}" Visibility="Collapsed"/>
<ContentControl x:Name="DebugPage" ContentTemplate="{StaticResource DebugViewTemplate}" Opacity="0" Content="{Binding}" Visibility="Collapsed"/>
<ContentControl x:Name="TerminalPage" ContentTemplate="{StaticResource TerminalViewTemplate}" Opacity="0" Content="{Binding}" Visibility="Collapsed"/>
<TextBlock HorizontalAlignment="Left" TextWrapping="Wrap" VerticalAlignment="Top" Text="{Binding ApplicationViewState}">
<TextBlock.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0"/>
<GradientStop Color="White" Offset="1"/>
</LinearGradientBrush>
</TextBlock.Background>
</TextBlock>
</Grid>