private void btnDuzenle_Click(object sender, EventArgs e)
{
Product guncelKat = new Product();
guncelKat.ProductID = id;
guncelKat.ProductName = txtAdi.Text;
guncelKat.CategoryID = (int)cmbKategori.SelectedValue;
guncelKat.UnitPrice = nmdFiyat.Value;
guncelKat.UnitsInStock = (short)nmdStok.Value;
urunRep.Duzenle(guncelKat);
dataGridView1.DataSource = urunRep.Listele();
}
