ArcGISWindowsPhoneSDK.VideoFills.ClearVideoSymbol C# (CSharp) Метод

        private void ClearVideoSymbol(Graphic graphic)
        {
            Grid videoGrid = FindName("MediaGrid") as Grid;
            if (videoGrid.Children != null && videoGrid.Children.Count > 0)
            {
                MediaElement m = videoGrid.Children.ElementAt(0) as MediaElement;
                if (m != null)
                {
                    m.MediaEnded -= State_Media_MediaEnded;
                    m.Stop();
                }
                videoGrid.Children.Clear();
            }

            graphic.Symbol = LayoutRoot.Resources["TransparentFillSymbol"] as Symbol;

            _lastActiveGraphics.Remove(graphic);
        }