Radio button basic operation in C# demo

Below is the windows form application which have four radio buttons. Each having its speciality. Let's see this with grammatically.

Below is the design view of the project:

Here is the source code for the above project:

Form1.cs:

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

        private void Form1_Load(object sender, EventArgs e)
        {
         
        }

        private void radioButton5_CheckedChanged(object sender, EventArgs e)
        {
            int a = Int32.Parse(textBox4.Text);
            int b = Int32.Parse(textBox5.Text);
            int c = 0;
            if (radioButton5.Checked)
                c = a + b;
            textBox6.Text = c.ToString();
        }

        private void radioButton6_CheckedChanged(object sender, EventArgs e)
        {
            int a = Int32.Parse(textBox4.Text);
            int b = Int32.Parse(textBox5.Text);
            int c = 0;
            if (radioButton6.Checked)
                c = a - b;
            textBox6.Text = c.ToString();
        }

        private void radioButton7_CheckedChanged(object sender, EventArgs e)
        {
            int a = Int32.Parse(textBox4.Text);
            int b = Int32.Parse(textBox5.Text);
            int c = 0;
            if (radioButton7.Checked)
                c = a * b;
            textBox6.Text = c.ToString();
        }

        private void radioButton8_CheckedChanged(object sender, EventArgs e)
        {
            int a = Int32.Parse(textBox4.Text);
            int b = Int32.Parse(textBox5.Text);
            int c = 0;
            if (radioButton8.Checked)
                c = a / b;
            textBox6.Text = c.ToString();
        }
    }
}

Program.cs:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace basic_opr_radio_btn_demo

{

    static class Program

    {

        ///

        /// The main entry point for the application.

        ///

        [STAThread]

        static void Main()

        {

            Application.EnableVisualStyles();

            Application.SetCompatibleTextRenderingDefault(false);

            Application.Run(new Form1());

        }

    }

}