private void button6_Click(object sender, EventArgs e)
        {
            string filedes = @"D:\stock proj\Products.xls";

            if (File.Exists(filedes))
            {
                File.Delete(filedes);
            }
            Reports.All_Products_Report report = new Reports.All_Products_Report();
            report.Refresh();
            //export options obj
            ExportOptions ex = new ExportOptions();
            //create disk obj
            DiskFileDestinationOptions disk  = new DiskFileDestinationOptions();
            ExcelFormatOptions         excel = new ExcelFormatOptions();

            //set the path
            disk.DiskFileName = @"D:\stock proj\Products.xls";
            ex = report.ExportOptions;
            ex.ExportDestinationType    = ExportDestinationType.DiskFile;
            ex.ExportFormatType         = ExportFormatType.Excel;
            ex.ExportFormatOptions      = excel;
            ex.ExportDestinationOptions = disk;
            report.Export();
            MessageBox.Show("Successfuly Stored", "Stored Report", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }
 private void button5_Click(object sender, EventArgs e)
 {
     Reports.All_Products_Report myrep = new Reports.All_Products_Report();
     Reports.Product_Report      form  = new Reports.Product_Report();
     myrep.Refresh();
     form.crystalReportViewer1.ReportSource = myrep;
     form.ShowDialog();
 }