看代碼打開一個(gè)窗口 fmNewProduct 添加一個(gè)Order.Product對(duì)象，然后綁定到dataGridView中不能顯示新添加的Product，有沒有辦法呀1 fmNewProduct fp = new fmNewProduct((Order)cmbOrder.SelectedItem, null);2 if (fp.ShowDialog() == System.Windows.Forms.DialogResult.OK)3 {4       if (cmbOrder.SelectedIndex < 0) return;5       Order op = (Order)cmbOrder.SelectedItem;6       if (op == null) return;7        datagridview1.DataSource = op.products;8 }