How to save radiobutton state to app settings

using System;
using System.Windows.Forms;

namespace AppSettingsDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            Properties.Settings.Default.RadioButton1State = radioButton1.Checked;
            Properties.Settings.Default.Save();
        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {
            Properties.Settings.Default.RadioButton2State = radioButton2.Checked;
            Properties.Settings.Default.Save();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Properties.Settings.Default.Reload();
            radioButton1.Checked = Properties.Settings.Default.RadioButton1State;
            radioButton2.Checked = Properties.Settings.Default.RadioButton2State;

        }
    }
}