private void frmUrunListele_Load(object sender, EventArgs e)
{
KategoriBL kbl = new KategoriBL();
clmkategori.DisplayMember = "Kategoriadi";
clmkategori.ValueMember = "KategoriId";
clmkategori.DataSource = kbl.KategoriListe();
UrunBL ubl = new UrunBL();
dt = ubl.UrunTablosu();
datagridurunliste.DataSource = dt;
kbl.Dispose();
ubl.Dispose();
}