internal void SetSyncParameters(SyncControlGridItemSet sync_control_grid_item_set)
        {
            this.sync_control_grid_item_set = sync_control_grid_item_set;

            // Clear up
            GridLibraryGrid.ItemsSource = null;

            // Freshen up
            if (null != sync_control_grid_item_set)
            {
                // Populate the grid
                GridLibraryGrid.ItemsSource = sync_control_grid_item_set.grid_items;
            }
        }
        protected override void OnClosed(EventArgs e)
        {
            base.OnClosed(e);

            // base.OnClosed() invokes this class' Closed() code, so we flipped the order of exec to reduce the number of surprises for yours truly.
            // This NULLing stuff is really the last rites of Dispose()-like so we stick it at the end here.

            try
            {
                sync_control_grid_item_set = null;

                DataContext = null;
            }
            catch (Exception ex)
            {
                Logging.Error(ex);
            }
        }