| -api-id | -api-type |
|---|---|
T:Windows.UI.Xaml.Media.Animation.BeginStoryboard |
winrt class |
A trigger action that begins a Storyboard. Not commonly used. See Remarks.
<BeginStoryboard ...>
singleStoryboard
</BeginStoryboard>Triggers, EventTrigger, Actions and BeginStoryboard are not commonly used. These API mainly exist for compatibility in XAML originally used for Microsoft Silverlight. For most scenarios where event triggers were used previously, you should either use visual states, or start animations by writing a Loaded handler that looks up an animation in page-level resources and then calls Begin on the animation's main Storyboard. For more info, see Quickstart: Control templates or Storyboarded animations.
If you do choose to use Triggers, in Windows Runtime XAML, the default behavior for event triggers and the only event that can be used to invoke an EventTrigger is FrameworkElement.Loaded. Because that's both the default and the only enabled behavior, you don't set RoutedEvent, and just use the XAML <EventTrigger>. For more info, see Triggers.
This XAML example shows the basic structure for using FrameworkElement.Triggers with its default FrameworkElement.Loaded trigger behavior to run a storyboarded animation. This XAML shows the EventTrigger and BeginStoryboard container elements in proper relationship with each using their XAML content property syntax and unnecessary property element tags (such as BeginStoryboard.Storyboard) omitted.
<Canvas Width="200" Height="200" x:Name="animatedcanvas" Background="Red">
<Canvas.Triggers>
<EventTrigger>
<BeginStoryboard>
<Storyboard x:Name="ColorStoryboard">
<!-- Animate the background of the canvas to green over 4 seconds. -->
<ColorAnimation Storyboard.TargetName="animatedcanvas"
Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)"
To="Green" Duration="0:0:4"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Canvas.Triggers>
</Canvas>TriggerAction, Triggers, Storyboard, Quickstart: Control templates