I'm trying to get a UserControl to tab properly and am baffled.
The logical tree looks like this.
|-Window
-Grid
-TabControl
-TabItem
-StackPanel
-MyUserControl
|-StackPanel
-GroupBox
-Grid
-ComboBox
-Textbox1
-Textbox2
Everything works fine, except when
the visibility converter for
the ComboBox returns Visibility.Collapsed (don't allow user to change database mode), then when textbox1 is selected, instead of being able to tab through
the controls in
the UserControl,
the focus shifts to a button declared at
the bottom of
the window. Nothing else apart from
the controls displayed has TabIndex or FocusManager properties set.
I'm banging my head against a brick wall and I must be missing something. I've tried IsFocusScope=True/False, played with FocusedElement and nothing works if that ComboBox is invisible (Visibility.Collapsed).
<Window x:Class="MyNamespace.Client.WinInstaller"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
FocusManager.FocusedElement="{Binding ElementName=tabWizard}">
<Window.Resources>
<props:Settings x:Key="settings" />
</Window.Resources>
<Grid Grid.IsSharedSizeScope="True">
<!-- row and column definitions omitted -->
<loc:SmallHeader Grid.Row="0" x:Name="headerBranding" HeaderText="Setup" />
<TabControl x:Name="tabWizard" DataContext="{StaticResource settings}" SelectedIndex="0" FocusManager.IsFocusScope="True">
<TabItem x:Name="tbStart" Height="0">
<StackPanel>
<TextBlock Text="Database Mode"/>
<loc:DatabaseSelector x:Name="dbSelector" AllowChangeMode="False" TabIndex="1"
AvailableDatabaseModes="SQLServer" IsPortRequired="False"
DatabaseMode="{Binding Default.DbMode,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
DatabasePath="{Binding Default.DatabasePath,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
</StackPanel>
</TabItem>
...
The top of
the user control is below:
<UserControl x:Class="MyNamespace.Client.DatabaseSelector"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Name="root"
FocusManager.IsFocusScope="True"
FocusManager.FocusedElement="{Binding ElementName=cboDbMode}">
<UserControl.Resources>
<conv:DatabaseModeIsFileBased x:Key="DatabaseModeIsFileBased"/>
<BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
</UserControl.Resources>
<StackPanel DataContext="{Binding}">
<GroupBox>
<Grid>
<!-- row and column definitions omitted -->
<Label Content="Database Mode"/>
<ComboBox x:Name="cboDbMode" SelectedValue="{Binding ElementName=root,Path=DatabaseMode,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
DisplayMemberPath="Value" SelectedValuePath="Key" TabIndex="1" Visibility="{Binding AllowChangeMode,ElementName=root,Converter={StaticResource BooleanToVisibilityConverter}}" />
<!-- AllowChangeMode is a DependencyProperty on
the UserControl -->
<Grid><!-- row and column definitions omitted -->
<Label "Host"/>
<TextBox x:Name="txtDBHost" Text="{Binding ElementName=root,Path=DatabaseHost,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" TabIndex="2" />
<TextBox x:Name="txtDBPort" Text="{Binding ElementName=root,Path=DatabasePortString,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" TabIndex="3" />
