Fluent.InRibbonGallery.OnDropDownClosed C# (CSharp) 메소드

        void OnDropDownClosed(object sender, EventArgs e)
        {
            galleryPanel.Width = Double.NaN;
            galleryPanel.IsGrouped = false;
            galleryPanel.MinItemsInRow = currentItemsInRow;
            galleryPanel.MaxItemsInRow = currentItemsInRow;
            //galleryPanel.InvalidateMeasure();
            popupControlPresenter.Content = null;
            //galleryPanel.Opacity = 0;
            /*Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)(() =>
                                                                               {*/
            controlPresenter.Content = galleryPanel;
            Dispatcher.BeginInvoke(DispatcherPriority.SystemIdle, (ThreadStart)(() =>
         {
             if ((quickAccessGallery == null) || ((quickAccessGallery != null) && (!quickAccessGallery.IsDropDownOpen)))
             {
                 IsSnapped = false;
                 //galleryPanel.Opacity = 1;
             }
         }));
            //}));

            //snappedImage.Visibility = Visibility.Collapsed;            
            if (DropDownClosed != null) DropDownClosed(this, e);
            if (Mouse.Captured == this) Mouse.Capture(null);
            Dispatcher.BeginInvoke(DispatcherPriority.SystemIdle, (ThreadStart)(() =>
                                                                               {
                                                                                   GalleryItem selectedContainer = ItemContainerGenerator.ContainerFromItem(SelectedItem) as GalleryItem;
                                                                                   if (selectedContainer != null) selectedContainer.BringIntoView();

                                                                               }));
            dropDownButton.IsChecked = false;
            canOpenDropDown = true;
        }