private void btnSil_Click(object sender, EventArgs e) { db = new NWDataContext(); try { Product urun = db.Products.Where(u => u.ProductID == (int)lbUrunler.SelectedValue).First(); db.Products.DeleteOnSubmit(urun); db.SubmitChanges(); UrunGetir(); } catch { MessageBox.Show("Ürünün silinmesi engellendi."); } }