public void checkid() { bool stat = false; Data.Client dc = new Data.Client(); koneksi kon = new koneksi(); dc.No_identity = tbxnoidentityregis.Text; kon.openConnection(); string query = "select no_identity from tb_client where no_identity = '" + dc.No_identity + "'"; if (kon.checkidreader(query) == 1) { lblcheckidclient.Text = "'" + tbxnoidentityregis.Text + "' sudah terpakai!"; } else { lblcheckidclient.Text = "'" + tbxnoidentityregis.Text + "' bisa digunakan!"; } kon.closeConnection(); //return stat; }