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Answer 1

+1 A:

Can you flip the "From" and "To" and play it again?

Kai Wang 2010-05-29 23:01:21

Thank you for answer. OK that's the way... But it is not very clear. The thing is that you have to keep somewhere an information that you have flipped them. I would rather have something clearer. There is really no method for this, no the creators of `Storyboard` did not think about this ??

drasto 2010-05-29 23:08:00

@drasto- I think if you wants to play an animation reversely, the designer treats it as a different animation. It's up to you to make creating such an animation easier. Of course you can always write extension methods to extend the storyboard you are using to make it cleaner.

Kai Wang 2010-05-29 23:24:53

Thank you. I'll try to write extension method but it will not be easy. I will have to take care about such thinks as invoking backward animation while forward animation is still running and similar.

drasto 2010-05-29 23:44:25

@draso, post your animation code.

Kai Wang 2010-05-30 02:37:50

There is no better answer and I don't thing there is better approach then flipping From and To, so I accept this answer.

drasto 2010-06-06 17:37:38

Answer 2

A:

I think this will help you (see also xaml example below)

var storyboard = this.Resources["Storyboard1"] as Storyboard;

        var anim = storyboard.Children[0] as DoubleAnimationUsingKeyFrames;

        anim.AutoReverse = true;

        anim.RepeatBehavior = RepeatBehavior.Forever;

<Storyboard x:Key="Storyboard1">
        <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="border" Storyboard.TargetProperty="(FrameworkElement.Width)">
            <SplineDoubleKeyFrame KeyTime="00:00:00" Value="200"/>
            <SplineDoubleKeyFrame KeyTime="00:00:00.5000000" Value="300"/>
        </DoubleAnimationUsingKeyFrames>
    </Storyboard>

Daniel Bern 2010-05-30 13:05:54

Sorry I don't want to AutoRepeat it I want to play it backwards, maybe later after original play was finished.

drasto 2010-06-06 17:35:57

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Play animation (storyboard) backwards

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