private void dataPelangganDataGridView_DoubleClick(object sender, EventArgs e)
        {
            if (dataPelangganDataGridView.Rows.Count <= 0)
            {
                return;
            }

            int selectedrowindex = dataPelangganDataGridView.SelectedCells[0].RowIndex;

            DataGridViewRow selectedRow = dataPelangganDataGridView.Rows[selectedrowindex];

            selectedCustomerID = Convert.ToInt32(selectedRow.Cells["CUSTOMER_ID"].Value);

            if (originModuleID == globalConstants.CASHIER_MODULE)
            {
                parentForm.setCustomerID(selectedCustomerID);
                this.Close();
            }
            else if (originModuleID == globalConstants.RETUR_PENJUALAN_STOCK_ADJUSTMENT)
            {
                dataReturPenjualanForm displayedReturForm = new dataReturPenjualanForm(originModuleID, "", selectedCustomerID);
                displayedReturForm.ShowDialog(this);
            }
            else if (originModuleID == globalConstants.PEMBAYARAN_PIUTANG)
            {
                pembayaranLumpSumForm pembayaranForm = new pembayaranLumpSumForm(originModuleID, selectedCustomerID);
                pembayaranForm.ShowDialog(this);
            }
            else
            {
                dataPelangganDetailForm displayedForm = new dataPelangganDetailForm(globalConstants.EDIT_CUSTOMER, selectedCustomerID);
                displayedForm.ShowDialog(this);
            }
        }
        private void newButton_Click(object sender, EventArgs e)
        {
            dataPelangganDetailForm displayForm = new dataPelangganDetailForm(globalConstants.NEW_CUSTOMER);

            displayForm.ShowDialog(this);
        }