WPF Focus Navigation Wrapping

Question

Is there a way to force Focus Navigation (as controlled by the Tab key or MoveFocus method) to wrap inside a given container? I have included code which demonstrates this problem below. What is the easiest way to make Tab move focus from TextBox "Charlie" to TextBox "Able" (and visa-versa for Shift+Tab on TextBox "Able") rather than moving it to MenuItem "Alpha"?

<Window x:Class="NavWrapExample.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">
    <DockPanel LastChildFill="True">
        <Menu DockPanel.Dock="Top">
            <MenuItem Header="Alpha" />
            <MenuItem Header="Bravo" />
            <MenuItem Header="Charlie" />
        </Menu>
        <StackPanel>
            <TextBox Text="Able" />
            <TextBox Text="Baker" />
            <TextBox Text="Charlie" />
        </StackPanel>
    </DockPanel>
</Window>

Answer 1

Use the KeyboardNavigation.TabNavigation attached property, like so:

<StackPanel KeyboardNavigation.TabNavigation="Cycle">
    <TextBox Text="Able" />
    <TextBox Text="Baker" />
    <TextBox Text="Charlie" />
</StackPanel>

Found the answer on Mark Smith's blog.

Answer 2

It sounds like what you want is the same behavior as toolbars: you can tab into them, but once an element within the toolbar gets keyboard focus, focus loops inside. If so, use FocusManager as follows:

<StackPanel FocusManager.IsFocusScope="True">
    <!-- Controls go here... -->
</StackPanel>