TabBarItem Extensions

Provides additional features for TabBarItem.

Attached Properties

Property	Type	Description
OnClickBehaviors	TBIOnClickBehaviors*	Backing property for the TabBarItem on-click behaviors when already selected.
OnClickBehaviorsTarget	UIElement	Optional. Backing property for the target of OnClickBehaviors.*

TBIOnClickBehaviors*: Specifies the on-click behaviors of TabBarItem:

• BackNavigation: Find the first NavigationView with back stack to back navigate.
• ScrollToTop: Find the first ListView or ScrollViewer to reset scroll position.
• Auto: All of above.

OnClickBehaviorsTarget*: The content host which the on-click behavior is applied is either the target itself or one of its descendent (via deep first search) suitable for the behavior. When omitted, the parent of TabBar will serve as the target.

Usage

<!-- Include the following XAML namespace to use the samples below -->
xmlns:utu="using:Uno.Toolkit.UI"
...

<Grid>
    <ListView Grid.Row="0" ... />
    <ScrollViewer Grid.Row="0" ... />
    <Frame Grid.Row="0" ... />

    <TabBar Grid.Row="1">
        <utu:TabBarItem ... utu:TabBarItemExtensions.OnClickBehaviors="Auto" />