Codigo Detest Visual C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;namespace TEST_TIPO_DE_CARACTER
{
public partial class frmtest : Form
{
public frmtest()
{
InitializeComponent();
}
int cont,cont2;private void btnvalor_Click_1(object sender, EventArgs e)
{
if (rbp1s.Checked == false && rbp1n.Checked == false ||
rbp2s.Checked == false && rbp2n.Checked ==false ||
rbp3s.Checked == false && rbp3n.Checked == false ||
rbp4s.Checked == false && rbp4n.Checked == false ||
rbp5s.Checked == false &&rbp5n.Checked == false ||
rbp6s.Checked == false && rbp6n.Checked == false ||
rbp7s.Checked == false && rbp7n.Checked == false ||
rbp8s.Checked ==false && rbp8n.Checked == false ||
rbp9s.Checked == false && rbp9n.Checked == false ||
rbp10s.Checked == false && rbp10n.Checked == false ||rbp11s.Checked == false && rbp11n.Checked == false ||
rbp12s.Checked == false && rbp12n.Checked == false ||
rbp13s.Checked == false && rbp13n.Checked == false ||rbp14s.Checked == false && rbp14n.Checked == false ||
rbp15s.Checked == false && rbp15n.Checked == false ||
rbp16s.Checked == false && rbp16n.Checked ==false ||
rbp17s.Checked == false && rbp17n.Checked == false ||
rbp18s.Checked == false && rbp18n.Checked == false ||
rbp19s.Checked == false &&rbp19n.Checked == false ||
rbp20s.Checked == false && rbp20n.Checked == false)
{
MessageBox.Show("Faltan preguntas por responder");
}...