private void GuidesDeleteItem(object SelectedItem) { DialogParameters param = new DialogParameters { { "message", "Удалить выбранный элемент?" } }; _currentDialogService.ShowDialog("MessageBox", param, r => { if (r.Result == ButtonResult.OK) { SessionsHelper.GuidesItemDelete(SelectedItem as IGuidesItem); GuidesDataItems = SessionsHelper.GetDataGridGuidesItems(GuidesMenuSelectedItem); } }); }