private void UrunSatis_Load(object sender, EventArgs e) { PersonelBL pbl = new PersonelBL(); UrunBL ubl = new UrunBL(); Personel p = new Personel(); Urun u = new Urun(); cmbPersonel.DisplayMember = p.ToString(); cmbPersonel.ValueMember = "PersonelID"; cmbUrun.DisplayMember = u.ToString(); cmbUrun.ValueMember = "UrunID"; cmbPersonel.DataSource = pbl.cmbDataSourcePersonel(); cmbUrun.DataSource = ubl.cmbDataSourceUrun(); }