private static bool Run(Storyboard storyboard, ChartSeries series, Action completed = null)
        {
            if (storyboard.Children.Count == 0)
            {
                return(false);
            }

            storyboard.Completed += (s, e) =>
            {
                storyboard.Stop();

                lock (locker)
                {
                    int count = (int)series.GetValue(ChartAnimationUtilities.RunningAnimationsCountProperty);
                    count--;
                    series.SetValue(ChartAnimationUtilities.RunningAnimationsCountProperty, count);
                }

                if (completed != null)
                {
                    completed();
                }
            };

            storyboard.Begin();
            lock (locker)
            {
                int count = (int)series.GetValue(ChartAnimationUtilities.RunningAnimationsCountProperty);
                count++;
                series.SetValue(ChartAnimationUtilities.RunningAnimationsCountProperty, count);
            }

            return(true);
        }
        private static bool Run(Storyboard storyboard, ChartSeries series, Action completed = null)
        {
            if (storyboard.Children.Count == 0)
            {
                return false;
            }

            storyboard.Completed += (s, e) =>
            {
                storyboard.Stop();

                lock (locker)
                {
                    int count = (int)series.GetValue(ChartAnimationUtilities.RunningAnimationsCountProperty);
                    count--;
                    series.SetValue(ChartAnimationUtilities.RunningAnimationsCountProperty, count);
                }

                if (completed != null)
                {
                    completed();
                }
            };

            storyboard.Begin();
            lock (locker)
            {
                int count = (int)series.GetValue(ChartAnimationUtilities.RunningAnimationsCountProperty);
                count++;
                series.SetValue(ChartAnimationUtilities.RunningAnimationsCountProperty, count);
            }

            return true;
        }