public DuzenleForm(Urun urun)
 {
     this.urun = urun;
     InitializeComponent();
     txtUrunAd.Text      = urun.UrunAd;
     nudBirimFiyat.Value = urun.BirimFiyat;
     Text = urun.ToString();
 }
        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();
        }