AdaptiveTrigger是否可以在DataTemplate中工作?
那就是我用来自定义ShellNavigation的代码,除了视觉状态外,它都可以正常工作。他们不会触发任何东西。
<shell:ShellHeadView x:Key="ShellHeadView_01">
<shell:ShellHeadView.ContentTemplate>
<DataTemplate>
<Grid Margin="20,0">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup>
<VisualState x:Name="GreenBackgroundVisualState">
<VisualState.Setters>
<Setter Target="headViewLeft.Background" Value="Green" />
</VisualState.Setters>
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="1000"/>
</VisualState.StateTriggers>
</VisualState>
<VisualState x:Name="OrangeBackgroundVisualState">
<VisualState.Setters>
<Setter Target="headViewLeft.Background" Value="Orange" />
</VisualState.Setters>
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="2000"/>
</VisualState.StateTriggers>
</VisualState>
<VisualState x:Name="RedBackgroundVisualState">
<VisualState.Setters>
<Setter Target="headViewLeft.Background" Value="Red" />
</VisualState.Setters>
<VisualState.StateTriggers>
<AdaptiveTrigger MinWindowWidth="3000"/>
</VisualState.StateTriggers>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid Grid.Column="0" x:Name="headViewLeft" Width="100" Height="90">
</Grid>
最佳答案
尝试像这样将DataTemplate
包装在UserControl
中-
<DataTemplate>
<UserControl>
<Grid>
<VisualStateManager.VisualStateGroups>
...
</Grid>
</UserControl>
</DataTemplate>
看起来任何具有
Control
属性的Content
都可以使用。这就是UserControl
和ContentControl
起作用的原因。因此,如果将
UserControl
替换为ContentControl
并为其提供一个空的Style
。它也应该工作。<Style x:Key="EmptyContentControlStyle" TargetType="ContentControl">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ContentControl" />
</Setter.Value>
</Setter>
</Style>
<DataTemplate>
<ContentControl Style="{StaticResource EmptyContentControlStyle}">
<Grid>
<VisualStateManager.VisualStateGroups>
...
</Grid>
</ContentControl>
</DataTemplate>
关于c# - AdaptiveTrigger和DataTemplate,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/32088500/