private void SALES_REPORT_Load(object sender, EventArgs e)
        {
            if (Sales_Invoice_Details.SaleID == 0)
            {
                SQL_TASKS.ShowReport(crystalReportViewer1, "st_getSalesReceipt", "@userID", LoginCodeClass.USERID);
            }
            else
            {
                SQL_TASKS.ShowReport(crystalReportViewer1, "st_getSalesReceiptwrtSalesID", "@saleID", Sales_Invoice_Details.SaleID);

                Sales_Invoice_Details.SaleID = 0;
            }
        }