WPF:如果用户单击子列表框,如何选择父列表框
在我使用 DataTemplate 机制的应用程序中,我将另一个列表框插入到 ListBox 项中。但是,当在父列表框中选择一个列表框项时,焦点是否可能位于另一个父列表框项的子项上(见图)
怎么办:如果子列表框之一处于焦点(选择了其中一项),则父列表框项目被选择?使用绑定或模板
<DataTemplate x:Key="NotesListBoxDataTemplate" DataType="Note">
<StackPanel Orientation="Vertical">
<StackPanel Orientation="Horizontal">
<TextBox Text="{Binding Path=Title, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"></TextBox>
<my:DatePicker Height="25" Name="datePicker1" Width="115" xmlns:my="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit"
SelectedDate="{Binding LastEdit,
Mode = TwoWay}" />
</StackPanel>
<TextBox Text="{Binding Path=Content, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"></TextBox>
<StackPanel Orientation="Horizontal">
<ListBox Name="ImagesListBox" SelectedIndex="{Binding Mode=OneWayToSource, Source={StaticResource progParameters}, Path=SelectedImage, UpdateSourceTrigger=PropertyChanged}" ItemsSource="{Binding Path=Images}" ItemTemplate="{StaticResource NotesListBoxImagesTemplate}" Style="{StaticResource HorizontalListBox}">
</ListBox>
<StackPanel Orientation="Vertical">
<Button Name="AddImageButon" Content="+" Click="AddImageButon_Click"></Button>
<Button Name="RemoveImageButon" Content="-" Click="RemoveImageButon_Click"></Button>
</StackPanel>
</StackPanel>
</StackPanel>
</DataTemplate>
In my application using DataTemplate mechanism I insert into ListBox item another listbox. But is it possible that when selected one listboxitem in parent listbox, the focus may be on another parent listboxitem's child (see picture)
How to do: if one of child listbox in focus (one item from them selected), then parent listboxitem being selected to? Using binding or templating
<DataTemplate x:Key="NotesListBoxDataTemplate" DataType="Note">
<StackPanel Orientation="Vertical">
<StackPanel Orientation="Horizontal">
<TextBox Text="{Binding Path=Title, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"></TextBox>
<my:DatePicker Height="25" Name="datePicker1" Width="115" xmlns:my="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit"
SelectedDate="{Binding LastEdit,
Mode = TwoWay}" />
</StackPanel>
<TextBox Text="{Binding Path=Content, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"></TextBox>
<StackPanel Orientation="Horizontal">
<ListBox Name="ImagesListBox" SelectedIndex="{Binding Mode=OneWayToSource, Source={StaticResource progParameters}, Path=SelectedImage, UpdateSourceTrigger=PropertyChanged}" ItemsSource="{Binding Path=Images}" ItemTemplate="{StaticResource NotesListBoxImagesTemplate}" Style="{StaticResource HorizontalListBox}">
</ListBox>
<StackPanel Orientation="Vertical">
<Button Name="AddImageButon" Content="+" Click="AddImageButon_Click"></Button>
<Button Name="RemoveImageButon" Content="-" Click="RemoveImageButon_Click"></Button>
</StackPanel>
</StackPanel>
</StackPanel>
</DataTemplate>
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在父
ListBox
上将属性IsSynchronizedWithCurrentItem
设置为true
,然后在内部ListBox
中设置SelectedItem
属性为“{Binding SelectedItem ElementName=lbParent}”
。考虑使用转换器来帮助您获取无法访问的特定数据通过 xaml 或者如果您需要进行一些计算。
希望这有帮助。
On the parent
ListBox
set propertyIsSynchronizedWithCurrentItem
totrue
, then in the innerListBox
es set theSelectedItem
property to"{Binding SelectedItem ElementName=lbParent}"
.Consider using a Converter to help you get specific data that is not accessible thru xaml or if you need to do some caculations.
Hope this helps.