Trouble Animating Transforms in GroupTransform

Question

I have an image of a fish in a WPF project (VB.net code behind), and I\'m attempting to animate it swimming back and forth using two transforms.

For some reason, while

Answer 1

Those property paths are all wrong, but i would vote for just avoiding the whole trouble of only using those paths by utilizing Storyboard.TargetName; this works:

<!-- ... -->
<TransformGroup>
    <ScaleTransform  x:Name="scaleTransform" ScaleX="1"/>
    <TranslateTransform x:Name="translateTransform" X="0"/>
</TransformGroup>
  <!-- ... -->
    <Storyboard>
        <DoubleAnimationUsingKeyFrames Duration="0:0:30"
                                       Storyboard.TargetProperty="ScaleX"
                                       Storyboard.TargetName="scaleTransform"
                                       RepeatBehavior="Forever">
            <LinearDoubleKeyFrame KeyTime="0:0:14.9" Value="1"/>
            <LinearDoubleKeyFrame KeyTime="0:0:15" Value="-1"/>
            <LinearDoubleKeyFrame KeyTime="0:0:29.9" Value="-1"/>
            <LinearDoubleKeyFrame KeyTime="0:0:30" Value="1"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Duration="0:0:30"
                                       Storyboard.TargetProperty="X"
                                       Storyboard.TargetName="translateTransform"
                                       RepeatBehavior="Forever">
            <LinearDoubleKeyFrame KeyTime="0:0:0" Value="0"/>
            <LinearDoubleKeyFrame KeyTime="0:0:14.9" Value="407"/>
            <LinearDoubleKeyFrame KeyTime="0:0:15" Value="680"/>
            <LinearDoubleKeyFrame KeyTime="0:0:29.9" Value="265"/>
            <LinearDoubleKeyFrame KeyTime="0:0:30" Value="0"/>
        </DoubleAnimationUsingKeyFrames>
    </Storyboard>

If you really want to do it using Storyboard.TargetProperty only, these would be the correct paths as i found out just now:

Storyboard.TargetProperty="RenderTransform.Children[0].ScaleX"
Storyboard.TargetProperty="RenderTransform.Children[1].X"

Which does make perfect sense if you think about it.