【解決方法】現在の Web 要求の実行中に未処理の例外が発生しました。 エラーの詳細とコード内のどこでエラーが発生したかについては、スタック トレースを確認してください。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Data;
using ProfitPlus.Models;
using ProfitPlus.Helpers;
using System.Web.SessionState;

namespace ProfitPlus.Controllers
{
    [SessionTimeout]
    public class RADTPrintController : Controller
    {
        //
        // GET: /Cash/
        //GenHelper g = new GenHelper();
        public ActionResult Index()
        {
            //if (!g.HasPermission()) return Redirect("/Login");
            //int divid = Convert.ToInt32(Session["divid"]);
            //int senctionid = Convert.ToInt32(Session["sectionid"]);
            return View("RADTPrint");
        }
        /*public ActionResult findbpo()
        {
            Cash c = new Cash();
            GenHelper g = new GenHelper();
            DataTable dt = c.FindBpo(Convert.ToInt32(Session["divid"]), Convert.ToInt32(Session["sectionid"]));
            DataSet ds = new DataSet();
            ds.Tables.Add(dt);
            return PartialView("_Findvouchers", ds);
        }*/
        public ActionResult printradt(string strdate,string endate)
        {
            //Int32 sum = 0;
            //string strdate;
            //string endate;
            Int32 userid = Convert.ToInt32(Session["userid"]);
            Users user = new Users();
            DataTable userdt = user.GetUserRecord(userid);
            DataTable sect = DBClass.GetData("select sectionname from section_master where sectionid=" + userdt.Rows[0]["sectionid"]);
            ViewBag.sectName = Convert.ToString(sect.Rows[0]["sectionname"]);
            DataTable div = DBClass.GetData("select divname from div_master where divid=" + userdt.Rows[0]["divid"]);
            ViewBag.divName = Convert.ToString(div.Rows[0]["divname"]);
            RADTPrint pb = new RADTPrint();
            DataTable pdt = pb.printmisradt(strdate, endate, Convert.ToInt32(Session["divid"]));
            //DataTable pdt = c.printbpo(BpoNumber, Convert.ToString(Session["divname"]), Convert.ToString(Session["sectionname"]));
            foreach (DataColumn col in pdt.Columns)
                col.ReadOnly = false;
            Session["Misdata"] = pdt;
            //DataTable dt1 = DBClass.GetData("select de.depotname from depot_master as de inner join div_master div on de.divid=div.divid where div.divid='" + divid + "'");
            //ViewBag.value = Convert.ToInt64((dt1.Rows[0]["depotname"]));
            return View("RADTMISREP", pdt);
        }
        /*public ActionResult bpopdf(FormCollection fc)
        {
            GenHelper g = new GenHelper();
            Int32 userid = Convert.ToInt32(Session["userid"]);
            Users user = new Users();
            DataTable userdt = user.GetUserRecord(userid);
            DataTable sect = DBClass.GetData("select sectionname from section_master where sectionid=" + userdt.Rows[0]["sectionid"]);
            DataSet ds = new DataSet();
            Reports rs = new Reports();
            float[] cols = new float[] { 60f, 220f, 60f, 60f };
            String path = Server.MapPath("/pdfs/printbpo.pdf");
            DateTime stBydate = DateTime.Parse(fc["stdate"]).Date;
            var strdate = stBydate.ToString("dd-MM-yyyy");
            DateTime edBydate = DateTime.Parse(fc["edate"]).Date;
            var endate = edBydate.ToString("dd-MM-yyyy");

            //String[] rephead = new String[] { "N.W.K.R.T.C", sect.Rows[0]["sectionname"] + " DRAWING ACCOUNT FROM " + fc["stdate"] + " To " + fc["edate"] };
            String[] rephead = new String[] { "N.W.K.R.T.C", sect.Rows[0]["sectionname"] + " BPO FROM " + strdate + " To " + endate };
            String[] tblhead = new string[] { "VOUCHER.NO", "PARTYNAME", "DEBIT ACCT.HEAD", "DUE AMOUNT", "REMARKS", "CHEQUE.NO & DATE" };
            DataTable dt = rs.GetRpData(fc["stdate"], fc["edate"], Convert.ToInt32(userdt.Rows[0]["sectionid"]), Convert.ToInt32(userdt.Rows[0]["divid"]));
            ds.Tables.Add(dt);
            pdf ph = new pdf(ds, cols, rephead, tblhead, path);
            ph.GenerateReport();
            // return File(path, "application/pdf");
            return File(path, "BpoPrint/pdf");
        }*/
    }
}

私が試したこと：

問題を解決するために私に提案してください