Desactivar TabStop en el expansor

Question

Configuré IsTabStop en False, pero Tab todavía navega hacia el expansor.

¿Alguna idea de qué estoy haciendo mal?

<Expander Header="Data" IsTabStop="False"> 
    <Border Background="White" BorderThickness="0"/> 
</Expander> 

Answer 1

Parece un error en la plantilla Expander:

http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/e51ad4f5-95d3-4c3e-be87-7917e4d81fa0/

Aquí es una solución completa (feo, lo sé):

<Window 
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
x:Class="WpfApplication1.MainWindow" 
x:Name="Window" 
Title="MainWindow" 
Width="640" Height="480"> 
<Window.Resources> 
    <Style x:Key="ExpanderRightHeaderStyle" TargetType="{x:Type ToggleButton}"> 
    <Setter Property="Template"> 
    <Setter.Value> 
    <ControlTemplate TargetType="{x:Type ToggleButton}"> 
     <Border Padding="{TemplateBinding Padding}"> 
     <Grid SnapsToDevicePixels="False" Background="Transparent"> 
     <Grid.RowDefinitions> 
     <RowDefinition Height="19"/> 
     <RowDefinition Height="*"/> 
     </Grid.RowDefinitions> 
     <Grid> 
     <Grid.LayoutTransform> 
      <TransformGroup> 
      <TransformGroup.Children> 
      <TransformCollection> 
      <RotateTransform Angle="-90"/> 
      </TransformCollection> 
      </TransformGroup.Children> 
      </TransformGroup> 
     </Grid.LayoutTransform> 
     <Ellipse x:Name="circle" Stroke="DarkGray" HorizontalAlignment="Center" VerticalAlignment="Center" Width="19" Height="19"/> 
     <Path x:Name="arrow" Stroke="#666" StrokeThickness="2" HorizontalAlignment="Center" VerticalAlignment="Center" SnapsToDevicePixels="false" Data="M 1,1.5 L 4.5,5 L 8,1.5"/> 
     </Grid> 
     <ContentPresenter HorizontalAlignment="Center" Margin="0,4,0,0" VerticalAlignment="Top" SnapsToDevicePixels="True" Grid.Row="1" RecognizesAccessKey="True"/> 
     </Grid> 
     </Border> 
     <ControlTemplate.Triggers> 
     <Trigger Property="IsChecked" Value="true"> 
     <Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/> 
     </Trigger> 
     <Trigger Property="IsMouseOver" Value="true"> 
     <Setter Property="Stroke" TargetName="circle" Value="#FF3C7FB1"/> 
     <Setter Property="Stroke" TargetName="arrow" Value="#222"/> 
     </Trigger> 
     <Trigger Property="IsPressed" Value="true"> 
     <Setter Property="Stroke" TargetName="circle" Value="#FF526C7B"/> 
     <Setter Property="StrokeThickness" TargetName="circle" Value="1.5"/> 
     <Setter Property="Stroke" TargetName="arrow" Value="#FF003366"/> 
     </Trigger> 
     </ControlTemplate.Triggers> 
    </ControlTemplate> 
    </Setter.Value> 
    </Setter> 
    </Style> 
    <Style x:Key="ExpanderUpHeaderStyle" TargetType="{x:Type ToggleButton}"> 
    <Setter Property="Template"> 
    <Setter.Value> 
    <ControlTemplate TargetType="{x:Type ToggleButton}"> 
     <Border Padding="{TemplateBinding Padding}"> 
     <Grid SnapsToDevicePixels="False" Background="Transparent"> 
     <Grid.ColumnDefinitions> 
     <ColumnDefinition Width="19"/> 
     <ColumnDefinition Width="*"/> 
     </Grid.ColumnDefinitions> 
     <Grid> 
     <Grid.LayoutTransform> 
      <TransformGroup> 
      <TransformGroup.Children> 
      <TransformCollection> 
      <RotateTransform Angle="180"/> 
      </TransformCollection> 
      </TransformGroup.Children> 
      </TransformGroup> 
     </Grid.LayoutTransform> 
     <Ellipse x:Name="circle" Stroke="DarkGray" HorizontalAlignment="Center" VerticalAlignment="Center" Width="19" Height="19"/> 
     <Path x:Name="arrow" Stroke="#666" StrokeThickness="2" HorizontalAlignment="Center" VerticalAlignment="Center" SnapsToDevicePixels="false" Data="M 1,1.5 L 4.5,5 L 8,1.5"/> 
     </Grid> 
     <ContentPresenter HorizontalAlignment="Left" Margin="4,0,0,0" VerticalAlignment="Center" SnapsToDevicePixels="True" Grid.Column="1" RecognizesAccessKey="True"/> 
     </Grid> 
     </Border> 
     <ControlTemplate.Triggers> 
     <Trigger Property="IsChecked" Value="true"> 
     <Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/> 
     </Trigger> 
     <Trigger Property="IsMouseOver" Value="true"> 
     <Setter Property="Stroke" TargetName="circle" Value="#FF3C7FB1"/> 
     <Setter Property="Stroke" TargetName="arrow" Value="#222"/> 
     </Trigger> 
     <Trigger Property="IsPressed" Value="true"> 
     <Setter Property="Stroke" TargetName="circle" Value="#FF526C7B"/> 
     <Setter Property="StrokeThickness" TargetName="circle" Value="1.5"/> 
     <Setter Property="Stroke" TargetName="arrow" Value="#FF003366"/> 
     </Trigger> 
     </ControlTemplate.Triggers> 
    </ControlTemplate> 
    </Setter.Value> 
    </Setter> 
    </Style> 
    <Style x:Key="ExpanderLeftHeaderStyle" TargetType="{x:Type ToggleButton}"> 
    <Setter Property="Template"> 
    <Setter.Value> 
    <ControlTemplate TargetType="{x:Type ToggleButton}"> 
     <Border Padding="{TemplateBinding Padding}"> 
     <Grid SnapsToDevicePixels="False" Background="Transparent"> 
     <Grid.RowDefinitions> 
     <RowDefinition Height="19"/> 
     <RowDefinition Height="*"/> 
     </Grid.RowDefinitions> 
     <Grid> 
     <Grid.LayoutTransform> 
      <TransformGroup> 
      <TransformGroup.Children> 
      <TransformCollection> 
      <RotateTransform Angle="90"/> 
      </TransformCollection> 
      </TransformGroup.Children> 
      </TransformGroup> 
     </Grid.LayoutTransform> 
     <Ellipse x:Name="circle" Stroke="DarkGray" HorizontalAlignment="Center" VerticalAlignment="Center" Width="19" Height="19"/> 
     <Path x:Name="arrow" Stroke="#666" StrokeThickness="2" HorizontalAlignment="Center" VerticalAlignment="Center" SnapsToDevicePixels="false" Data="M 1,1.5 L 4.5,5 L 8,1.5"/> 
     </Grid> 
     <ContentPresenter HorizontalAlignment="Center" Margin="0,4,0,0" VerticalAlignment="Top" SnapsToDevicePixels="True" Grid.Row="1" RecognizesAccessKey="True"/> 
     </Grid> 
     </Border> 
     <ControlTemplate.Triggers> 
     <Trigger Property="IsChecked" Value="true"> 
     <Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/> 
     </Trigger> 
     <Trigger Property="IsMouseOver" Value="true"> 
     <Setter Property="Stroke" TargetName="circle" Value="#FF3C7FB1"/> 
     <Setter Property="Stroke" TargetName="arrow" Value="#222"/> 
     </Trigger> 
     <Trigger Property="IsPressed" Value="true"> 
     <Setter Property="Stroke" TargetName="circle" Value="#FF526C7B"/> 
     <Setter Property="StrokeThickness" TargetName="circle" Value="1.5"/> 
     <Setter Property="Stroke" TargetName="arrow" Value="#FF003366"/> 
     </Trigger> 
     </ControlTemplate.Triggers> 
    </ControlTemplate> 
    </Setter.Value> 
    </Setter> 
    </Style> 
    <Style x:Key="ExpanderHeaderFocusVisual"> 
    <Setter Property="Control.Template"> 
    <Setter.Value> 
    <ControlTemplate> 
     <Border> 
     <Rectangle Stroke="Black" StrokeDashArray="1 2" StrokeThickness="1" Margin="0" SnapsToDevicePixels="true"/> 
     </Border> 
    </ControlTemplate> 
    </Setter.Value> 
    </Setter> 
    </Style> 
    <Style x:Key="ExpanderDownHeaderStyle" TargetType="{x:Type ToggleButton}"> 
    <Setter Property="Template"> 
    <Setter.Value> 
    <ControlTemplate TargetType="{x:Type ToggleButton}"> 
     <Border Padding="{TemplateBinding Padding}"> 
     <Grid SnapsToDevicePixels="False" Background="Transparent"> 
     <Grid.ColumnDefinitions> 
     <ColumnDefinition Width="19"/> 
     <ColumnDefinition Width="*"/> 
     </Grid.ColumnDefinitions> 
     <Ellipse x:Name="circle" Stroke="DarkGray" HorizontalAlignment="Center" VerticalAlignment="Center" Width="19" Height="19"/> 
     <Path x:Name="arrow" Stroke="#666" StrokeThickness="2" HorizontalAlignment="Center" VerticalAlignment="Center" SnapsToDevicePixels="false" Data="M 1,1.5 L 4.5,5 L 8,1.5"/> 
     <ContentPresenter HorizontalAlignment="Left" Margin="4,0,0,0" VerticalAlignment="Center" SnapsToDevicePixels="True" Grid.Column="1" RecognizesAccessKey="True"/> 
     </Grid> 
     </Border> 
     <ControlTemplate.Triggers> 
     <Trigger Property="IsChecked" Value="true"> 
     <Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/> 
     </Trigger> 
     <Trigger Property="IsMouseOver" Value="true"> 
     <Setter Property="Stroke" TargetName="circle" Value="#FF3C7FB1"/> 
     <Setter Property="Stroke" TargetName="arrow" Value="#222"/> 
     </Trigger> 
     <Trigger Property="IsPressed" Value="true"> 
     <Setter Property="Stroke" TargetName="circle" Value="#FF526C7B"/> 
     <Setter Property="StrokeThickness" TargetName="circle" Value="1.5"/> 
     <Setter Property="Stroke" TargetName="arrow" Value="#FF003366"/> 
     </Trigger> 
     </ControlTemplate.Triggers> 
    </ControlTemplate> 
    </Setter.Value> 
    </Setter> 
    </Style> 
    <Style x:Key="ExpanderStyle1" TargetType="{x:Type Expander}"> 
    <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/> 
    <Setter Property="Background" Value="Transparent"/> 
    <Setter Property="HorizontalContentAlignment" Value="Stretch"/> 
    <Setter Property="VerticalContentAlignment" Value="Stretch"/> 
    <Setter Property="BorderBrush" Value="Transparent"/> 
    <Setter Property="BorderThickness" Value="1"/> 
    <Setter Property="Template"> 
    <Setter.Value> 
    <ControlTemplate TargetType="{x:Type Expander}"> 
     <Border SnapsToDevicePixels="true" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="3"> 
     <DockPanel> 
     <ToggleButton x:Name="HeaderSite" Focusable="{TemplateBinding Focusable}" FocusVisualStyle="{StaticResource ExpanderHeaderFocusVisual}" Margin="1" MinHeight="0" MinWidth="0" Style="{StaticResource ExpanderDownHeaderStyle}" Content="{TemplateBinding Header}" ContentTemplate="{TemplateBinding HeaderTemplate}" ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}" FontFamily="{TemplateBinding FontFamily}" FontSize="{TemplateBinding FontSize}" FontStretch="{TemplateBinding FontStretch}" FontStyle="{TemplateBinding FontStyle}" FontWeight="{TemplateBinding FontWeight}" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" DockPanel.Dock="Top"/> 
     <ContentPresenter x:Name="ExpandSite" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Focusable="false" Visibility="Collapsed" DockPanel.Dock="Bottom"/> 
     </DockPanel> 
     </Border> 
     <ControlTemplate.Triggers> 
     <Trigger Property="IsExpanded" Value="true"> 
     <Setter Property="Visibility" TargetName="ExpandSite" Value="Visible"/> 
     </Trigger> 
     <Trigger Property="ExpandDirection" Value="Right"> 
     <Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Right"/> 
     <Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Left"/> 
     <Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderRightHeaderStyle}"/> 
     </Trigger> 
     <Trigger Property="ExpandDirection" Value="Up"> 
     <Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Top"/> 
     <Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Bottom"/> 
     <Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderUpHeaderStyle}"/> 
     </Trigger> 
     <Trigger Property="ExpandDirection" Value="Left"> 
     <Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Left"/> 
     <Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Right"/> 
     <Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderLeftHeaderStyle}"/> 
     </Trigger> 
     <Trigger Property="IsEnabled" Value="false"> 
     <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/> 
     </Trigger> 
     </ControlTemplate.Triggers> 
    </ControlTemplate> 
    </Setter.Value> 
    </Setter> 
    </Style> 
</Window.Resources> 

<Grid x:Name="LayoutRoot"> 
    <Expander Focusable="False" Margin="68,81,293,0" VerticalAlignment="Top" Height="77" Header="Expander" Style="{DynamicResource ExpanderStyle1}"> 
    <Grid/> 
    </Expander> 
</Grid> 
</Window>