void searchTransaction() { if (!string.IsNullOrWhiteSpace(txtTransactionno.Text)) { string transctionNo = "0"; if (txtTransactionno.Text.Contains("PV-")) { string[] foo = txtTransactionno.Text.Split('-'); if (foo.Length == 2) { transctionNo = foo[1]; } } else { transctionNo = txtTransactionno.Text; } int bar = 0; if (int.TryParse(transctionNo, out bar)) { dgProductTransaction.DataSource = dbController.getProductTransactionFromTransactionID(bar.ToString()); computeTotalPrice(); } } }