private void frmUrunListele_Load(object sender, EventArgs e)
{
UrunBL ub = new UrunBL();
dt = ub.UrunlerTablosu();
dataGridUrunler.DataSource = dt;
ub.Dispose();
clmKategori.DisplayMember = "Kat_Ad";
clmKategori.ValueMember = "ID";
clmKategori.DataSource = ub.cmbDataSourceKategori();
}