async void MarkedOrderLine(ProductionOrderLineClient selectedItem) { busyIndicator.IsBusy = true; var orderLineMarked = new CreditorOrderLineClient(); OrderAPI orderApi = new OrderAPI(api); var res = await orderApi.GetMarkedOrderLine(selectedItem, orderLineMarked); busyIndicator.IsBusy = false; if (res == ErrorCodes.Succes) { AddDockItem(TabControls.OrderLineMarkedPage, new object[] { api, orderLineMarked }, string.Format("{0}: {1}", Uniconta.ClientTools.Localization.lookup("PurchaseLines"), orderLineMarked._OrderNumber)); } else { UtilDisplay.ShowErrorCode(res); } }