private void btnPreview_Click(object sender, EventArgs e)
 {
     try
     {
         module_Rpt.rpt_name = "FRM_ROWMATERIALMASTER";
         Business_Report.Report_Viewer rpt = new Business_Report.Report_Viewer();
         rpt.Show();
     }
     catch (Exception err) { err.GetBaseException(); }
 }
 private void btnPreview_Click(object sender, EventArgs e)
 {
     module_Rpt.rpt_name = "FRM_ITEMMASTER";
     Business_Report.Report_Viewer rpt = new Business_Report.Report_Viewer();
     rpt.Show();
 }