private void updateDataGridView产品() { bool isChecked = checkBox所有没有报价.Checked; if (isChecked) { dataGridView产品.DataSource = pMgr.GetProductsWithoutPrice(); } else if (selectedOrderId != null) { dataGridView产品.DataSource = pMgr.GetProductsByOrder(selectedOrderId); } else { dataGridView产品.DataSource = null; } dataGridView产品.Update(); }