如果ItemTemplate中的TextBox获得焦点,请选择ListBoxItem

Question

我已经添加了DataTemplate一个ListBox类来将我的集合绑定到:

<ListBox x:Name="lstEmails" Height="259" Margin="12,0,12,41" Width="276"
         SelectionChanged="lstEmails_SelectionChanged">
    <ListBox.ItemTemplate> 
        <DataTemplate> 
            <StackPanel Orientation="Horizontal"> 
                <Label Visibility="Hidden" Content="{Binding ID}"></Label> 
                <TextBox Width="200"  Text="{Binding EmailAddress}"></TextBox> 
            </StackPanel> 
        </DataTemplate> 
    </ListBox.ItemTemplate> 
</ListBox> 

这完全符合我的要求.虽然当我点击时TextBox,ListBox不会自动设置关联ListItem的Selected.我可以在代码中执行此操作,但我更愿意将其用作组件(当时没有意外).

关于如何实现这一点的任何想法？

---

这似乎不起作用,它不会让我点击任何东西.我错过了什么.这是我的新XAML.

<UserControl.Resources> 
    <!--<TextBox x:Key="TB" x:Name="TextBoxInsideListBoxItemTemplate"> 
        <TextBox.Style>--> 
            <Style TargetType="{x:Type TextBox}"> 
                <Setter Property="IsHitTestVisible" Value="False" /> 
                <Style.Triggers> 
                    <DataTrigger Binding="{Binding IsSelected, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type ListBoxItem}, AncestorLevel=1}}" 
                                                     Value="True"> 
                        <Setter Property="IsHitTestVisible" Value="True" /> 
                    </DataTrigger> 
                </Style.Triggers> 
            </Style> 
        <!--</TextBox.Style> 
    </TextBox>--> 
</UserControl.Resources> 
<Grid> 
    <ListBox x:Name="lstEmails" Height="259" Margin="12,0,12,41" Width="276" SelectionChanged="lstEmails_SelectionChanged">
        <ListBox.ItemTemplate> 
            <DataTemplate> 
                <StackPanel Orientation="Horizontal"> 
                    <!--<Label Visibility="Hidden" Content="{Binding ID}"></Label>--> 
                    <TextBox Width="220" Text="{Binding EmailAddress}" > 
                    </TextBox> 
                    <!--<TextBox Width="220" Text="{Binding EmailAddress}" GotFocus="TextBox_GotFocus"></TextBox>-->
                </StackPanel> 
            </DataTemplate> 
        </ListBox.ItemTemplate> 
    </ListBox> 
    <Button Width="20" Margin="12,0,0,12" Name="btnAdd" VerticalAlignment="Bottom" Click="btnAdd_Click" Height="23" HorizontalAlignment="Left">+</Button>
    <Button Width="20" HorizontalAlignment="Left" Margin="30,0,0,12" Name="btnRemove" VerticalAlignment="Bottom" Click="btnRemove_Click" Height="23">-</Button>
    <Button Height="23" HorizontalAlignment="Right" Margin="0,0,12,12" Name="btnApply" VerticalAlignment="Bottom" Width="49" Click="btnApply_Click">Apply</Button>
</Grid>

我认为点击两次是很好的功能.

Answer 1

您可以在属性IsKeyboardFocusWithin中触发ItemContainerStyle并设置IsSelected为true.

<ListBox.ItemContainerStyle>
    <Style TargetType="{x:Type ListBoxItem}">
        <Style.Triggers>
            <DataTrigger Binding="{Binding IsKeyboardFocusWithin, RelativeSource={RelativeSource Self}}" Value="True">
                <DataTrigger.EnterActions>
                    <BeginStoryboard>
                        <Storyboard>
                            <BooleanAnimationUsingKeyFrames Storyboard.TargetProperty="(ListBoxItem.IsSelected)">
                                <DiscreteBooleanKeyFrame KeyTime="0" Value="True"/>
                            </BooleanAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard>
                </DataTrigger.EnterActions>
            </DataTrigger>
        </Style.Triggers>
    </Style>
</ListBox.ItemContainerStyle>

您也可以使用Setter而不是单帧动画,但一旦焦点离开,选择将再次丢失ListBox:

<ListBox.ItemContainerStyle>
    <Style TargetType="{x:Type ListBoxItem}">
        <Style.Triggers>
            <DataTrigger Binding="{Binding IsKeyboardFocusWithin, RelativeSource={RelativeSource Self}}" Value="True">
                <Setter Property="IsSelected" Value="True"/>
            </DataTrigger>
        </Style.Triggers>
    </Style>
</ListBox.ItemContainerStyle>

Answer 2

如果您有多个实例,ListBox则可以考虑使用自定义列表框(通过从中派生ListBox).请参阅此处的说明.

或者,如果您只有1个(或只有少量),并且不想为此创建单独的类,请使用此hackListBox:

<TextBox x:Name="TextBoxInsideListBoxItemTemplate" ... >

    <TextBox.Style>
        <Style TargetType="{x:Type TextBox}">
            <Setter Property="IsHitTestVisible" Value="False" />
            <Style.Triggers>
                <DataTrigger
                        Binding="{Binding IsSelected, RelativeSource={RelativeSource FindAncestor, 
                    AncestorType={x:Type ListBoxItem}, AncestorLevel=1}}"
                        Value="True">
                    <Setter Property="IsHitTestVisible" Value="True" />
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </TextBox.Style>

</TextBox>

请注意,您必须再次单击以编辑文本TextBox(根据我的说法,这实际上很酷).