我正在使用UI项的HeaderTemplate自定义演示文稿。我想在DataTemplate中访问父项的属性:
<dxa:AccordionItem Header="{Binding SelectedComponents.Count}" Tag="Test" HighlightOnHover="False" HighlightOnPress="False" Margin="0,0,13,0">
<dxa:AccordionItem.HeaderTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition Height="1"/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding RelativeSource=Tag}" VerticalAlignment="Center" />
<TextBlock Text="{Binding}" Grid.Column="2" Grid.Row="0" VerticalAlignment="Center" HorizontalAlignment="Center"/>
<Rectangle Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="3" HorizontalAlignment="Stretch" VerticalAlignment="Center" Fill="DimGray" Height="1"/>
</Grid>
</DataTemplate>
</dxa:AccordionItem.HeaderTemplate>
</dxa:AccordionItem>
基本上,我想在DataTemplate中显示Tag属性。
我尝试过:
Text="{Binding RelativeSource=Tag}"
Text="{Binding Path=Tag}"
Text="{Binding ElementName=Tag}"
但似乎没有任何作用。
答案 0 :(得分:0)
我设法使用以下方法获得必要的绑定:
Text="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type dxa:AccordionItem}}, Path=Tag}"