我有一个列表框,ItemContainerStyle
其中描述了列表框中每个元素的样式。看起来像这样:
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem" BasedOn="{StaticResource MyStyle}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Border BorderThickness="0,0,0,1" BorderBrush="#1f000000" Padding="16 8">
<Button Command={Binding MyCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=lists:MyControl}}}" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListBox.ItemContainerStyle>
事实是,当我单击此按钮时,我想知道SelectedItem
列表框中的,该列表框绑定在我的ViewModel中。除非我先选择该项目,否则不会触发此选择。
有任何想法吗?
您需要使用触发器来强制IsSelected:
<Style.Triggers>
<Trigger Property="IsKeyboardFocusWithin" Value="True">
<Setter Property="IsSelected" Value="True"/>
</Trigger>
</Style.Triggers>
这是一个完整的工作示例:
<ListBox x:Name="ListBox" ItemsSource="{Binding SomeList}" SelectedItem="{Binding SelectedListElement, Mode=TwoWay}" IsSynchronizedWithCurrentItem="True" >
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem" >
<Style.Triggers>
<Trigger Property="IsKeyboardFocusWithin" Value="True">
<Setter Property="IsSelected" Value="True"/>
</Trigger>
</Style.Triggers>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Border BorderThickness="0,0,0,1" BorderBrush="#1f000000" Padding="16 8">
<Button Command="{Binding RelativeSource={RelativeSource AncestorType={x:Type ListBox}},
Path=DataContext.Run}" CommandParameter="{Binding}" Height="30" Width="100"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
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