Simple Code Swapping The Numbers

1. Create the design.

public partial class Form1 : Form
    {
        int fNum, sNum;

        public Form1()
        {
            InitializeComponent();
        }

        private void btnSwap_Click(object sender, EventArgs e)
        {

            Int32.TryParse(textFNumber.Text, out fNum);
            Int32.TryParse(textSNumber.Text, out sNum);

            fNum = fNum * sNum;
            sNum = fNum / sNum;
            fNum = fNum / sNum;

            textResult1.Text = fNum.ToString();
            textResult2.Text = sNum.ToString();

        }
    }