private void reset()
 {
     hdType.Value = "0";
     optClear(optprefill);
     txtsearch.Text       = String.Empty;
     txtVTname.Text       = String.Empty;
     txtvtype.Text        = String.Empty;
     txtAbbr.Text         = String.Empty;
     ddlvno.SelectedIndex = 0;
     Label1.Visible       = false;
     Label2.Visible       = false;
     Label3.Visible       = false;
     txtno.Visible        = false;
     txtwidth.Visible     = false;
     optprefill.Visible   = false;
     txtno.Text           = String.Empty;
     txtwidth.Text        = String.Empty;
     Voucher.Clear();
     VoucherTable.Clear();
     txtprefix.Text   = "";
     chkPrint.Checked = false;
     chkNarr.Checked  = false;
 }