private void btnPrintOrder_Click(object sender, EventArgs e)
        {
            //this to make cursor waiting
            this.Cursor = Cursors.WaitCursor;
            //get last order
            int order_id = Convert.ToInt32(order.GET_Last_Orders_ID_FOR_PRINT().Rows[0][0]);

            // form for crestal report
            RPT.rpt_Orders      report = new RPT.rpt_Orders();
            RPT.FRM_PRT_PRODUCT frm    = new RPT.FRM_PRT_PRODUCT();
            report.SetDataSource(order.GetOrderDetails(order_id));
            frm.crystalReportViewer1.ReportSource = report;
            frm.ShowDialog();

            //this to make cursor Default
            this.Cursor = Cursors.Default;
        }