private void CloseEditPanel()
 {
     overlay.DataContext = null;
     overlay.Visibility  = Visibility.Collapsed;
     if (AnimationExtensions.IsBlurSupported)
     {
         AnimationExtensions.Blur(mapView, 0).Start();
     }
 }
        private void ShowEditPanel(ArcGISFeature feature)
        {
            overlay.DataContext = feature;
            overlay.Visibility  = Visibility.Visible;

            if (AnimationExtensions.IsBlurSupported)
            {
                AnimationExtensions.Blur(mapView, 10).Start();
            }
            else
            {
                overlay.Background = new SolidColorBrush(Windows.UI.Color.FromArgb(192, 255, 255, 255));
            }
        }