Catrobat.IDE.WindowsPhone.Views.Editor.Formula.FormulaEditorView.OnNavigatingFrom C# (CSharp) Method

        protected override async void OnNavigatingFrom(NavigatingCancelEventArgs e)
        {
            var animation = this.FormulaKeyboard.Resources["ExitTransition"] as Storyboard;
            if (animation != null)
            {
                animation.Begin();
                await Task.Delay(TimeSpan.FromSeconds(0.3));
            }
            base.OnNavigatingFrom(e);
        }