private void UpdateCustomer() { Musteri musteri = new Musteri(); musteri.Ad = txtAd.Text; musteri.Soyad = txtSoyad.Text; musteri.TelNo = masktxtTel.Text; musteri.MusteriTurId = int.Parse(comboBox1.SelectedValue.ToString()); musteriBusiness.UpdateCustomer(musteri, degiscekMusteri); }