请问老师：这是向AI提问 ”如何使用 SQL Server 连接池来减少新连接的开销“ 得到的回答，这个回答是否正确的吗？

这是参考回答修改后的代码：

private void Remove_Customer_Click(object sender, RoutedEventArgs e)
{
    if (customerList.SelectedValue == null) { return; }

    using (SqlConnection connection = new(ConnectionString))
        try
        {
            connection.Open();

            string removeAppointmentSql = @"DELETE FROM Appointments 
                                WHERE CustomerId = @CustomerId";
            string removeCustomerSql = @"DELETE FROM Customer
                                WHERE Id = @CustomerId";
            var CustomerId = customerList.SelectedValue;


            using SqlCommand command1 = new(removeAppointmentSql, connection);
            command1.Parameters.AddWithValue("@CustomerId", CustomerId);
            command1.ExecuteNonQuery();

            using SqlCommand command2 = new(removeCustomerSql, connection);
            command2.Parameters.AddWithValue("@CustomerId", CustomerId);
            command2.ExecuteNonQuery();

            ShowCustomers();
            CustomerList_SelectionChanged(null, null);
        }
        catch (Exception error)
        {
            MessageBox.Show("异常：" + error);
        }
        finally
        {
            connection.Close();
        }
}