在ListViewItem中设置InputBinding(KeyboardBinding)

Question

我希望设置 listViewitem 的输入绑定...它应该是键盘绑定而不是鼠标绑定...

我想当用户选择一个项目并按 Enter 时在我的视图模型中执行一个函数 的关键

样式

    <Style x:Key="{ComponentResourceKey TypeInTargetAssembly={x:Type CustomView:PlainView},
                                    ResourceId=ImageViewItem}"           
       TargetType="{x:Type ListViewItem}" BasedOn="{StaticResource {x:Type ListViewItem}}">

    <Setter Property="HorizontalContentAlignment" Value="Center" />
    <Setter Property="FocusVisualStyle" Value="{StaticResource ListViewItemFocusVisual}" />
    <Setter Property="BorderBrush" Value="Transparent" />
    <Setter Property="BorderThickness" Value="1" />
    <Setter Property="Margin" Value="0,0,0,1" />
    <Setter Property="Padding" Value="5,2,5,2" />
    <Setter Property="VerticalContentAlignment" Value="Center" />
    <Setter Property="Focusable" Value="False"></Setter>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ListViewItem}">
                <Border x:Name="border"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}"
                        CornerRadius="2"
                        SnapsToDevicePixels="true">
                    <Grid Margin="2,0,2,0">
                        <Rectangle x:Name="BackgroundGradientOver"
                                   Fill="{DynamicResource MouseOverBrush}"
                                   Opacity="0"
                                   RadiusX="1"
                                   RadiusY="1"
                                   Stroke="{DynamicResource MouseOverBorderBrush}" />
                        <Rectangle x:Name="BackgroundGradientSelectedDisabled"
                                   Fill="{DynamicResource ListItemSelectedBrush}"
                                   Opacity="0"
                                   RadiusX="1"
                                   RadiusY="1"
                                   Stroke="{DynamicResource ListItemSelectedBorderBrush}" />
                        <Rectangle x:Name="BackgroundGradientSelected"
                                   Fill="{DynamicResource PressedBrush}"
                                   Opacity="0"
                                   RadiusX="1"
                                   RadiusY="1"
                                   Stroke="{DynamicResource PressedBorderBrush}"
                                   StrokeThickness="1" />
                        <ContentPresenter x:Name="contentPresenter"
                                      Margin="{TemplateBinding Padding}"
                                      HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                      Content="{TemplateBinding Content}"
                                      ContentTemplate="{TemplateBinding ContentTemplate}" />
                    </Grid>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
    <Setter Property="Foreground" Value="{DynamicResource OutsideFontColor}" />
</Style>

code> ListViewItem我的 DataTemplate

<DataTemplate x:Key="centralTile">
    
    <StackPanel Width="80"
                Height="40"
                KeyboardNavigation.AcceptsReturn="True">
        <StackPanel.InputBindings>
            <KeyBinding Key="Enter" Command="{Binding Path=DataContext.KeyCommand, RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type Window}}}" CommandParameter="{Binding}"></KeyBinding>
        </StackPanel.InputBindings>
        <Grid>              
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="30" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
            <Button Command="{Binding Path=DataContext.KeyCommand, RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type Window}}}"
                            CommandParameter="{Binding}">
                <TextBlock Text="{Binding Path=Name}" />
            </Button>
            <Image Grid.Column="1" Source="Water lilies.jpg" />
        </Grid>
        <TextBlock HorizontalAlignment="Center"
                   FontSize="13"
                   Text="{Binding Path=Name}" />
    </StackPanel>
</DataTemplate>

我似乎找不到一种方法来做到这一点...

我在 DataTemplate 中附加了我的 InputBinding 以及 Style Nothing Works

            <KeyBinding Key="Enter" Command="{Binding Path=DataContext.KeyCommand, RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type Window}}}" CommandParameter="{Binding}"></KeyBinding> 

Answer 1

您是否使用 4.0 之前的任何 .Net 版本？如果是这样，KeyBinding.Command 和 KeyBinding.CommandParameter 上的绑定将不起作用。为此，您必须使用 CommandReference API。

否则，如果您使用 .Net 4.0，则将

1. KeyBinding 添加到 ListView 的 InputBindings。
2. 您必须将KeyBinding.CommandParameter 绑定到ListView 的SelectedItem。

这样，命令将在按下 Enter 参数时执行，该参数将成为 ListView 的选定项目（这就是我认为您想要实现的目标）