public InvoiceInformationForm(int invoiceID, string date, string t_am, string p_am, string need_to_pay) { InitializeComponent(); infoButton.Enabled = false; invoiceLabel.Text = date; totalAmLabel.Text = t_am; paidAmLabel.Text = p_am; needToPayLabel.Text = need_to_pay; List <string> accountList = invoiceLogic.GetAccountByID(invoiceID); for (int i = 0; i < accountList.Count; i++) { accountIDComboBox.Items.Add(accountList[i]); } }