Question

我有一个CustomControl的以下XAML：

<Style TargetType="{x:Type itvw:ItemView}">
    <Setter Property="Focusable" Value="True"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type itvw:ItemView}">
                <Border>
                    <Grid>
                        <TextBox/>
                    </Grid>
                </Border>
                <ControlTemplate.Triggers>
                <!--triggers-->
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

我想使用Interactivity / EventToCommand捕获整个CustomControl的KeyDown事件。

类似的东西：

 <i:Interaction.Triggers>
   <i:EventTrigger EventName="KeyDown">
      <cmd:EventToCommand Command="{Binding KeyDownCommand, Mode=OneWay}" PassEventArs="True"/>
   </i:EventTrigger>
 </i:Interaction.Triggers>

我的问题是 - 我在哪里将触发器放在ControlTemplate标记中？我想在后面的代码中做相同的事情：

this.KeyDown += ItemView_KeyDown;

Answer 1

您可以将它们放在ControlTemplate中或Border元素中：

<Style TargetType="{x:Type itvw:ItemView}">
<Setter Property="Focusable" Value="True"/>
<Setter Property="Template">
    <Setter.Value>
        <ControlTemplate TargetType="{x:Type itvw:ItemView}">
            <i:Interaction.Triggers>
                <i:EventTrigger EventName="KeyDown">
                    <cmd:EventToCommand Command="{Binding KeyDownCommand, Mode=OneWay}" PassEventArs="True"/>
                </i:EventTrigger>
            </i:Interaction.Triggers>
            <Border>
                <Grid>
                    <TextBox/>
                </Grid>
            </Border>
            <ControlTemplate.Triggers>
            <!--triggers-->
            </ControlTemplate.Triggers>
        </ControlTemplate>
    </Setter.Value>
</Setter>
</Style>

<Style TargetType="{x:Type itvw:ItemView}">
<Setter Property="Focusable" Value="True"/>
<Setter Property="Template">
    <Setter.Value>
        <ControlTemplate TargetType="{x:Type itvw:ItemView}">
            <Border>                
                <i:Interaction.Triggers>
                    <i:EventTrigger EventName="KeyDown">
                        <cmd:EventToCommand Command="{Binding KeyDownCommand, Mode=OneWay}" PassEventArs="True"/>
                    </i:EventTrigger>
                </i:Interaction.Triggers>
                <Grid>
                    <TextBox/>
                </Grid>
            </Border>
            <ControlTemplate.Triggers>
            <!--triggers-->
            </ControlTemplate.Triggers>
        </ControlTemplate>
    </Setter.Value>
</Setter>
</Style>

在ControlTemplate中放置交互触发器的位置

1 个答案: