我有代码:
<DataTemplate x:Key="SelectedTime">
<Border BorderBrush="DimGray" BorderThickness="4" Margin="-3,-2,-2,-4" Height="35">
<Grid Width="61" Height="31" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Background="LightGray" >
<Grid.RowDefinitions>
<RowDefinition Height="14"/>
<RowDefinition Height="15"/>
</Grid.RowDefinitions>
<Grid Background="LightBlue" Grid.Row="0" Margin="0,0,0,0">
<TextBlock TextBlock.FontSize="12" HorizontalAlignment="Left" VerticalAlignment="Stretch" TextAlignment="Center" Margin="6,-2,0,0"
Text="{TemplateBinding Tag}"/>
</Grid>
<TextBlock Grid.Row="1" Text="{TemplateBinding Content}" HorizontalAlignment="Left" VerticalAlignment="Stretch" TextAlignment="Center" TextBlock.FontSize="10" Height="12" Margin="16,-2,0,0"/>
</Grid>
</Border>
</DataTemplate>
<Style x:Key="LowerRadioButton"
TargetType="RadioButton"
BasedOn="{StaticResource {x:Type ToggleButton}}">
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="Background" Value="Transparent"/>
<Style.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="ContentTemplate" Value="{StaticResource SelectedTime}" />
</Trigger>
<Trigger Property="IsChecked" Value="False">
<Setter Property="ContentTemplate" Value="{StaticResource OrdinaryTime}" />
</Trigger>
</Style.Triggers>
</Style>
</UserControl.Resources>
<Grid Height="35" x:Name="testGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="20"/>
<RowDefinition Height="15"/>
</Grid.RowDefinitions>
<RadioButton Style="{StaticResource LowerRadioButton}" Content="12.10" Tag="1" Grid.Column="0" Grid.RowSpan="2" />
<RadioButton Style="{StaticResource LowerRadioButton}" Content="13.10" Tag="2" Grid.Column="1" Grid.RowSpan="2" />
<RadioButton Style="{StaticResource LowerRadioButton}" Content="14.10" Tag="3" Grid.Column="2" Grid.RowSpan="2" IsChecked="True" />
</Grid >
我需要绑定到DataTemplate中的标记。尝试通过construnction“{Binding Path = Tag,RelativeSource = {RelativeSource TemplatedParent}}”,但它没有绑定,显示空文本。我做错了什么?
答案 0 :(得分:1)
您应该知道TemplateBinding
只能用于ControlTemplate
,而不能DataTemplate
。所以你可以尝试这样的解决方法:
<TextBlock TextBlock.FontSize="12" HorizontalAlignment="Left"
VerticalAlignment="Stretch" TextAlignment="Center" Margin="6,-2,0,0"
Text="{Binding Tag,
RelativeSource={RelativeSource AncestorType=RadioButton}}"/>