private void BuyBtm_MouseDown(object sender, MouseButtonEventArgs e) { int i; ChangeInfo[] changeInfo = new ChangeInfo[Court.Length]; for (i = 0; i < Court.Length; i++) { changeInfo[i] = new ChangeInfo(); changeInfo[i].Id = Court[i].GetProductId(); changeInfo[i].Amount = Court[i].GetAmount(); } SaleClass.SaleWork(changeInfo, ManagerId, SectionId); CourtViewer.Children.Clear(); Court = new PositionBlank[0]; StorageViewer.Children.Clear(); Storage = new PositionBlank[0]; ReadStorage(); }