private void check_Click(object sender, EventArgs e) { if (comboBox1.SelectedItem.ToString() == "产品Id") { orderbinding.DataSource = service.CheckById(textBox1.Text); } else if (comboBox1.SelectedItem.ToString() == "用户名字") { orderbinding.DataSource = service.CheckByClient(textBox1.Text); } else if (comboBox1.SelectedItem.ToString() == "产品名字") { orderbinding.DataSource = service.CheckByProduct(textBox1.Text); } }