private void vip_Giris_Click(object sender, RoutedEventArgs e) { txt_kulad.Visibility = Visibility.Collapsed; cmb_sirketler.Visibility = Visibility.Collapsed; txt_kod.Visibility = Visibility.Collapsed; lbl_kod.Visibility = Visibility.Collapsed; lbl_kulad.Visibility = Visibility.Collapsed; lbl_sirketler.Visibility = Visibility.Collapsed; vip_uyeOl.Visibility = Visibility.Collapsed; lbl_kodGir.Visibility = Visibility.Visible; txt_kodGir.Visibility = Visibility.Visible; SqlConnection sqlCon = new SqlConnection("Data Source=GLORY\\SQLEXPRESS;Initial Catalog=uye;Integrated Security=True"); try { if (sqlCon.State == ConnectionState.Closed) { sqlCon.Open(); } string sorgu = "SELECT COUNT(1) FROM vipUyeler WHERE girisKodu=@girisKodu"; SqlCommand sqlCmd = new SqlCommand(sorgu, sqlCon); sqlCmd.CommandType = CommandType.Text; sqlCmd.Parameters.AddWithValue("@girisKodu", txt_kodGir.Text); int count = Convert.ToInt32(sqlCmd.ExecuteScalar()); if (count == 1) { MessageBox.Show("Giriş Başarılı"); ga_etkinlik ga_etkinlik_ = new ga_etkinlik(); ga_etkinlik_.Show(); this.Close(); } else { MessageBox.Show("Hatalı Giriş Kodu"); } } catch (Exception ex) { MessageBox.Show(ex.Message); } finally { sqlCon.Close(); } }