public IActionResult SpreadsheetConvertTo(ExcelDokModel model)
        {
            try
            {
                Workbook      workbook = new Workbook();
                string        fPath    = Path.Combine(VratiGlavnaFolder());
                DirectoryInfo d        = new DirectoryInfo(fPath);
                string        Uvoznik  = "00000" + HttpContext.Session.GetObjectFromJson <KorisnikModel>("LogovaniKorisnik").Uvoznik.AutoID.ToString();
                Uvoznik = Uvoznik.Substring(Uvoznik.Length - 5, 5);
                FileInfo[] files = d.GetFiles(Uvoznik + "_*").OrderByDescending(c => c.LastWriteTime).ToArray();
                if (files.Length > 0)
                {
                    string fajl = files[0].FullName;
                    workbook.LoadDocument(fajl);
                    Worksheet ws         = workbook.Worksheets["Tipovi"];
                    int       BrojRedova = GetEmptyCellRowIndex(ws) - 4;
                    //string m = ws.Cells["M7"].Value.ToString();
                    GlavnaDAO.DeleteExcelImport(HttpContext.Session.GetObjectFromJson <KorisnikModel>("LogovaniKorisnik"));
                    ExcelImpoortRow ExcelRed;
                    for (int i = 4; i < GetEmptyCellRowIndex(ws); i++)
                    {
                        ExcelRed                     = new ExcelImpoortRow();
                        ExcelRed.UvoznikID           = HttpContext.Session.GetObjectFromJson <KorisnikModel>("LogovaniKorisnik").Uvoznik.AutoID;
                        ExcelRed.KorisnikID          = HttpContext.Session.GetObjectFromJson <KorisnikModel>("LogovaniKorisnik").Id;
                        ExcelRed.Fajl                = fajl;
                        ExcelRed.RedBr               = (i - 3).ToString();
                        ExcelRed.Naziv               = VratiStr(ws.Cells["B" + i.ToString()].Value.ToString());
                        ExcelRed.VrstaHomologacijeID = VratiStr(ws.Cells["B" + i.ToString()].Value.TextValue.Substring(0, 3));
                        ExcelRed.Marka               = VratiStr(ws.Cells["C" + i.ToString()].Value.ToString());
                        ExcelRed.Tip                 = VratiStr(ws.Cells["D" + i.ToString()].Value.ToString());
                        ExcelRed.HOznaka             = VratiStr(ws.Cells["E" + i.ToString()].Value.ToString());
                        ExcelRed.PolozajHOznake      = VratiStr(ws.Cells["F" + i.ToString()].Value.ToString());
                        ExcelRed.Proizvodjac         = VratiStr(ws.Cells["G" + i.ToString()].Value.ToString());
                        ExcelRed.ProizvodjacAdresa   = VratiStr(ws.Cells["H" + i.ToString()].Value.ToString());
                        ExcelRed.KomNazivTipa        = VratiStr(ws.Cells["I" + i.ToString()].Value.ToString());
                        ExcelRed.Oznaka              = VratiStr(ws.Cells["J" + i.ToString()].Value.ToString());
                        ExcelRed.PolozajOznake       = VratiStr(ws.Cells["K" + i.ToString()].Value.ToString());
                        ExcelRed.Namjena             = VratiStr(ws.Cells["L" + i.ToString()].Value.ToString());
                        ExcelRed.Napomena            = VratiStr(ws.Cells["M" + i.ToString()].Value.ToString());
                        ExcelRed.Link                = VratiStr(ws.Cells["N" + i.ToString()].Value.TextValue);
                        try {
                            GlavnaDAO.CreateNewExcelRed(ExcelRed);
                        }
                        catch (SqlException)
                        {
                            ViewBag.ErrorMessages = "Greška se nalazi u " + ExcelRed.RedBr + ". redu u excel fajlu! Molim Vas popravite excel fajl!";
                            workbook.Dispose();
                            return(View("Index"));
                        }
                    }
                    workbook.Dispose();

                    ViewBag.ErrorMessages = GlavnaDAO.CallExcelProcedure(HttpContext.Session.GetObjectFromJson <KorisnikModel>("LogovaniKorisnik")).Replace("\n", "<br/>");
                }
            }
            catch (Exception)
            {
                //ViewBag.ErrorMessages = "Nije ispravan format unešenog fajla!";
                return(View("Index"));
            }
            return(View("Index"));
        }