EventTrigger RoutedEvent in wpf xaml
I have a problem in wpf xaml and i'm pretty new on this so it may be something basic
i want to rotate a ellipse 360 degree
<Ellipse Name="test" Fill="Black" StrokeThickness="5" Margin="0,0,0,0" Height="66">
<Ellipse.Triggers>
<EventTrigger RoutedEvent="Ellipse.Loaded" SourceName="test">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetName="test"
Storyboard.TargetProperty="(Ellipse.RenderTransform).(RotateTransform.Angle)"
From="0"
To="360"
Duration="0:0:0.5"
RepeatBehavior="1x" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Ellipse.Triggers>
</Ellipse>
But nothing happens, what is wro开发者_如何学Pythonng?
First of all. you will need the RotateTransform object in your ellipse:
<Ellipse.RenderTransform>
<RotateTransform x:Name="transform" />
</Ellipse.RenderTransform>
Change these properties in your Storyboard:
Storyboard.TargetName="transform"
Storyboard.TargetProperty="Angle"
And it should work!
You can also only change the TargetProperty, and leave the TargetName on test:
Storyboard.TargetName="test"
Storyboard.TargetProperty="RenderTransform.Angle"
That way, your RotateTransform object does not need a name!
Putting it all together:
<Ellipse Name="test" Fill="Black" StrokeThickness="5" Margin="0,0,0,0" Height="66">
<Ellipse.RenderTransform>
<RotateTransform />
</Ellipse.RenderTransform>
<Ellipse.Triggers>
<EventTrigger RoutedEvent="Ellipse.Loaded" SourceName="test">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetName="test"
Storyboard.TargetProperty="RenderTransform.Angle"
From="0" To="360" Duration="0:0:0.5" RepeatBehavior="1x" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Ellipse.Triggers>
</Ellipse>
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