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POProgrammatically reverse Storyboard
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  1. POProgrammatically reverse Storyboard
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    copied!<p>I have the following storyboard:</p> <pre><code>&lt;Window.Resources&gt; &lt;Storyboard x:Key="ButtonsAnim"&gt; &lt;DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="topRightButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)"&gt; &lt;SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/&gt; &lt;SplineDoubleKeyFrame KeyTime="00:00:00.2000000" Value="-100"/&gt; &lt;/DoubleAnimationUsingKeyFrames&gt; &lt;DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="topRightButton" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)"&gt; &lt;SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/&gt; &lt;SplineDoubleKeyFrame KeyTime="00:00:00.2000000" Value="100"/&gt; ... </code></pre> <p>It basically moves some buttons around in a canvas.</p> <p>This is the code that starts the animation:</p> <pre><code>void MainWindow_Loaded(object sender, RoutedEventArgs e) { Storyboard sb = (Storyboard)Resources["ButtonsAnim"]; storyBoard = sb; storyBoard.Begin(this, true); } </code></pre> <p>What I am trying to do is to reset the animation when I click a button which hides the window. When the window reappears the animation should start from the beginning.</p> <p>I tried using storyBoard.Begin(this, true) when the application reappears but for this first milliseconds the buttons are at their last position.</p> <p>I then tried storyBoard.seek(TimeSpan.Zero) before hiding the window but it fails:</p> <blockquote> <p>System.Windows.Media.Animation Warning: 6 : Unable to perform action because the specified Storyboard was never applied to this object for interactive control.; Action='Seek'; Storyboard='System.Windows.Media.Animation.Storyboard'; Storyboard.HashCode='24901833'; Storyboard.Type='System.Windows.Media.Animation.Storyboard'; TargetElement='System.Windows.Media.Animation.Storyboard'; TargetElement.HashCode='24901833'; TargetElement.Type='System.Windows.Media.Animation.Storyboard'</p> </blockquote> <p>I also tried storyBoard.remove(this) before hiding the window, same effect: the buttons are at their last position.</p> <p>Any ideas?</p> <p>Thank you.</p>
 

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