checkBox,radioButton,groupBox in C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace personel_details
{
    public partial class Personel : Form
    {
        public Personel()
        {
            InitializeComponent();
        }

        private void btnGenerate_Click(object sender, EventArgs e)
        {
            string gender;
            string hobby="";

            if(rbMan.Checked)
                gender=rbMan.Text;
            else
                gender=rbWoman.Text;

            if (checkBox1.Checked)
                hobby += checkBox1.Text + Environment.NewLine;
            if (checkBox2.Checked)
                hobby += checkBox2.Text + Environment.NewLine;
            if (checkBox3.Checked)
                hobby += checkBox3.Text + Environment.NewLine;
            if (checkBox4.Checked)
                hobby += checkBox4.Text + Environment.NewLine;
            if (checkBox5.Checked)
                hobby += checkBox5.Text + Environment.NewLine;
            if(hobby=="")
                hobby = "no hobbies" + Environment.NewLine;

           
            txtInfo.Text = "First Name: " + txtFirst.Text + Environment.NewLine +
                           "Last Name: " + txtLast.Text + Environment.NewLine +
                           "Age: "+txtAge.Text+Environment.NewLine+
                           "Gender: " + gender + Environment.NewLine +
                           "Hobbies: " +Environment.NewLine+ hobby+ Environment.NewLine ;
            

        }

    }
}