private void GSTPrint()
    {
        string Selectedcn = "";
        bool   checkAll   = false;

        if (Chkbxlstcn.Items[0].Selected == true)
        {
            checkAll = true;
        }
        for (int i = 1; i < Chkbxlstcn.Items.Count; i++)
        {
            if (checkAll == true)
            {
                Selectedcn = Selectedcn + Chkbxlstcn.Items[i].Value.ToString() + ",";
            }
            else if (Chkbxlstcn.Items[i].Selected == true)
            {
                Selectedcn = Selectedcn + Chkbxlstcn.Items[i].Value.ToString() + ",";
            }
        }
        // Selectedcn = Selectedcn ;
        DataTable dt = new DataTable();

        dt = CreditNote.Get_PrintCN_multiple(Convert.ToInt32(strFY), Selectedcn).Tables[0];
        Session["Datacn"] = dt;
        if (Session["Datacn"] != null)
        {
            DataTable dt5 = new DataTable();
            dt5 = (DataTable)Session["Datacn"];
            ReportDocument CR = new ReportDocument();
            CR.Load(Server.MapPath("Report/GSTCNPrint1.rpt"));
            CR.SetDataSource(dt5);
            Crptcnprint.ReportSource = CR;
        }
    }
    protected void btnget_Click(object sender, EventArgs e)
    {
        Session["Datacn"] = null;
        Session["Typ"]    = null;
        Session["Typ"]    = "N";
        string Selectedcn = "";
        bool   checkAll   = false;

        if (Chkbxlstcn.Items[0].Selected == true)
        {
            checkAll = true;
        }
        for (int i = 1; i < Chkbxlstcn.Items.Count; i++)
        {
            if (checkAll == true)
            {
                Selectedcn = Selectedcn + Chkbxlstcn.Items[i].Value.ToString() + ",";
            }
            else if (Chkbxlstcn.Items[i].Selected == true)
            {
                Selectedcn = Selectedcn + Chkbxlstcn.Items[i].Value.ToString() + ",";
            }
        }
        // Selectedcn = Selectedcn ;
        DataTable dt = new DataTable();

        dt = CreditNote.Get_PrintCN_multiple(Convert.ToInt32(strFY), Selectedcn).Tables[0];
        Session["Datacn"] = dt;
        fillReport();
    }