private void button1_Click(object sender, EventArgs e)
        {
            KayitliUye kayitliUye = new KayitliUye();

            kayitliUye.Mail  = textBox1.Text;
            kayitliUye.Sifre = textBox2.Text;
            KayitliUyeController kayitliUyeController = new KayitliUyeController();

            kayitliUyeController.KayitliUyeEkle(kayitliUye);
        }