我有一个tabcontrol,标签条位于左侧。所以它是一个简单的导航菜单类型选项卡控件。 TabConnel的控件模板中有一个TabPanel。
<ControlTemplate TargetType="{x:Type TabControl}">
<Grid x:Name="Grid" ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="ColumnDefinition0"/>
<ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition x:Name="RowDefinition0" Height="Auto"/>
<RowDefinition x:Name="RowDefinition1" Height="*"/>
</Grid.RowDefinitions>
<Border x:Name="ContentPanel" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.Column="0" KeyboardNavigation.DirectionalNavigation="Contained" Grid.Row="1" KeyboardNavigation.TabIndex="2" KeyboardNavigation.TabNavigation="Local" Padding="{TemplateBinding Padding}" Margin="0,-1,0,0">
<ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
<ScrollViewer x:Name="scroll" VerticalScrollBarVisibility="Disabled" HorizontalScrollBarVisibility="Auto" Template="{StaticResource ScrollViewerTab}">
<TabPanel x:Name="HeaderPanel" IsItemsHost="true" Margin="0,2,0,0" KeyboardNavigation.TabIndex="1" Panel.ZIndex="1" VerticalAlignment="Bottom" />
</ScrollViewer>
</Grid>
</ControlTemplate>
我需要tabPanel(标签标题),tabcontrol外的ActualWidth用于对齐目的。
我尝试过但是没有用。
<TextBlock Text="{Binding Path=Actualwidth, ElementName=HeaderPanel}" />
<TabControl />
我还尝试将标题面板的ActualWidth绑定到TabControl的Tag属性。即使这样也行不通。
<TabControl Tag="{Binding Path=ActualWidth, ElementName=HeaderPanel}" />
TabControls.Items集合提供了ViewModel对象的列表。所以我无法获得TabItem实例。
答案 0 :(得分:0)
我最终在代码隐藏文件
中使用了可视树辅助工具var tabPanel = VisualTreeHelpers.FindChild<TabPanel>(TabControl, "MenuPanel");