How to check the storyboard whether this is begin or not?

问题

I need to know whether the Storyboard is begun or not. If it is begun, I need to stop, otherwise I no need to stop. Both begin and stop will be done in code behind.

Currently I've done this:

if (parameter != null && parameter is System.Windows.Media.Animation.Storyboard)
{
    if (!(bool)value)
    {
        (parameter as System.Windows.Media.Animation.Storyboard).Begin();
        return Visibility.Visible;
    }
    else
    {
        (parameter as System.Windows.Media.Animation.Storyboard).Stop();
        return Visibility.Collapsed;
    }
}

I have faced the binding error:

System.Windows.Media.Animation Warning: 6 : Unable to perform action because the specified Storyboard was never applied to this object for interactive control.; Action='Stop'; Storyboard='System.Windows.Media.Animation.Storyboard'; Storyboard.HashCode='7861304'; Storyboard.Type='System.Windows.Media.Animation.Storyboard'; TargetElement='System.Windows.Media.Animation.Storyboard'; TargetElement.HashCode='7861304'; TargetElement.Type='System.Windows.Media.Animation.Storyboard'

Can anyone share how to stop the storyboard once its begun?

来源：https://stackoverflow.com/questions/32731701/how-to-check-the-storyboard-whether-this-is-begin-or-not