Xaml Doubleanimation targetproperty crashes - wpf

Question

I would like to animate my Label inside of canvas from canvas right to canvas left + size of label, infinitely. Which means my label comes from the right side and goes to the left till the end and then again repeats.
This is my xaml:
<Canvas Margin="0, 0, 0, 20" Name="CanMain2" Height="30" Width="350" >
<Label x:Name="LabelNameSong" Content="Hello" >
<Label.Resources>
<Storyboard x:Key="Scroll">
<DoubleAnimation To="{Binding ActualWidth, ElementName=LabelNameSong}" Duration="00:00:10"
Storyboard.TargetProperty="(Canvas.Right)"
Storyboard.TargetName="LabelNameSong"
RepeatBehavior="Forever"/>
</Storyboard>
</Label.Resources>
<Label.Triggers>
<EventTrigger RoutedEvent="Label.Loaded">
<BeginStoryboard Storyboard="{StaticResource Scroll}" />
</EventTrigger>
<EventTrigger RoutedEvent="Label.SizeChanged">
<BeginStoryboard Storyboard="{StaticResource Scroll}" />
</EventTrigger>
</Label.Triggers>
</Label>
</Canvas>
As soon as I launch app it crashes, and debugger says:
Cannot animate the 'Right' property on a
'System.Windows.Controls.Label' using a
'System.Windows.Media.Animation.DoubleAnimation'. For details see the
inner exception.
I am new to xaml and can't seem to make this work.

Answer 1

This is because Canvas.Right is an AttachedProperty but you have not attached the property to your Label
If you add the AttachedProperty to your Label it will then let you animate the value as the Property will be registered(attached) to the Label
Example:
<Canvas Margin="0, 0, 0, 20" Name="CanMain2" Height="30" Width="350" >
<Label x:Name="LabelNameSong" Content="Hello" Canvas.Right="0" >
<Label.Resources>
<Storyboard x:Key="Scroll">
<DoubleAnimation To="{Binding ActualWidth, ElementName=LabelNameSong}" Duration="00:00:10"
Storyboard.TargetProperty="(Canvas.Right)"
Storyboard.TargetName="LabelNameSong"
RepeatBehavior="Forever"/>
</Storyboard>
</Label.Resources>
<Label.Triggers>
<EventTrigger RoutedEvent="Label.Loaded">
<BeginStoryboard Storyboard="{StaticResource Scroll}" />
</EventTrigger>
<EventTrigger RoutedEvent="Label.SizeChanged">
<BeginStoryboard Storyboard="{StaticResource Scroll}" />
</EventTrigger>
</Label.Triggers>
</Label>
</Canvas>