/// <summary>
        /// Method changes status in status bar according state of last focused List view.
        /// </summary>
        private void _ChangeStatus()
        {
            // Create new status builder.
            StatusBuilder statusBuilder = new StatusBuilder();

            // Init counters.
            int ordersCount = 0;
            int routesCount = 0;

            //
            if (SelectedItems.Count == 0)
            {
                string status = App.Current.GetString(NO_SELECTION_GRID_STATUS_FORMAT,
                                                      CurrentSchedule.Routes.Count,
                                                      CurrentSchedule.UnassignedOrders.Count);
                App.Current.MainWindow.StatusBar.SetStatus(this, status);
                return;
            }

            // Get counts of selected items.
            foreach (Object obj in SelectedItems)
            {
                if (obj is Order || (obj is Stop && ((Stop)obj).StopType == StopType.Order))
                    ordersCount++; // If selection contains stops and orders.
                else if (obj is Route)
                    routesCount++;
            }

            if (ordersCount > 0)
            {
                // Fill selection status for orders selection.
                statusBuilder.FillSelectionStatusWithoutCollectionSize(CurrentSchedule.UnassignedOrders.Count,
                                                                       App.Current.FindString("Order"),
                                                                       ordersCount, this);
            }
            else if (routesCount > 0)
            {
                // Fill selection status for routes selection.
                statusBuilder.FillSelectionStatus(CurrentSchedule.Routes.Count,
                                                  App.Current.FindString("Route"),
                                                  routesCount, this);
            }
        }