silverlight触发器中什么事件可以作为RoutedEvent事件
<Canvas Background="AliceBlue">
<Ellipse x:Name="ellipse1" Fill="GreenYellow"
Width="150" Height="200" />
<Button x:Name="bt" Content="Button" HorizontalAlignment="Left" Margin="238,151,0,0" VerticalAlignment="Top" Width="75" >
<Button.Triggers>
<!--创建触发器-->
<EventTrigger RoutedEvent="Canvas.Loaded">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetName="ellipse1"
Storyboard.TargetProperty="Width"
From="150" To="300" Duration="0:0:3" />
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</Button.Triggers>
</Button>
</Canvas>
<UserControl.Resources>
<Storyboard x:Name="myStoryboard">
<DoubleAnimation Storyboard.TargetName="ellipse1" Storyboard.TargetProperty="Width" From="150" To="300" Duration="0:0:3"/>
</Storyboard>
</UserControl.Resources>
<Canvas Background="AliceBlue">
<Ellipse x:Name="ellipse1" Fill="GreenYellow" Width="150" Height="200" />
<Button x:Name="bt" Content="Button" HorizontalAlignment="Left" Margin="238,151,0,0" VerticalAlignment="Top" Width="75" Click="bt_Click" />
</Canvas>
private void bt_Click(object sender, RoutedEventArgs e)
{
myStoryboard.Begin();
}