C# da While Döngüsü ile Sıcaklık Hesaplama

c#

  private void button1_Click(object sender, EventArgs e)

        {

            int a, b;

            a = Convert.ToInt32(textBox1.Text);

            b = Convert.ToInt32(textBox2.Text);

            while (a<=b)

            {

                listBox1.Items.Add(a);

                a = a + 2;

            }

            while (a>=b)

            {

                listBox1.Items.Add(b);

                b = b + 2;

            }

        }