namespace WinFormsApp3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int baslangic, bitis, artis;
            baslangic = Convert.ToInt32(textBox1.Text);
            bitis = Convert.ToInt32(textBox2.Text);
            artis = Convert.ToInt32(textBox3.Text);
            int sayac = baslangic;
            while (sayac < bitis)
            {
               
                listBox1.Items.Add(sayac);
                sayac += artis;

            }
        }
    }
}