public JsonResult AddInvoice(INV_InvoiceViewModal inv_InvoiceViewModal)
        {
            string validMsg = "";

            try
            {
                if (inv_InvoiceViewModal == null)
                {
                    //error meesage or expception handle
                }
                else if (inv_InvoiceViewModal.INV_InvoiceItems == null)
                {
                    //error meesage or expception handle
                }
                else
                {
                    if (inv_InvoiceViewModal.InvoiceID > 0)
                    {
                        int invoiceId = inv_InvoiceViewModal.InvoiceID;
                        foreach (var item in inv_InvoiceViewModal.INV_InvoiceItems)
                        {
                            var checkExist = db.INV_InvoiceItem.Any(e => e.InvoiceID == invoiceId &&
                                                                    e.ItemID == item.ItemID &&
                                                                    e.Quantity == item.Quantity);
                            if (checkExist == false)
                            {
                                var newINV_InvoiceItemAdd = new INV_InvoiceItem()
                                {
                                    InvoiceID    = invoiceId,
                                    ItemID       = item.ItemID,
                                    Quantity     = item.Quantity,
                                    Created      = DateTime.Now,
                                    Modified     = DateTime.Now,
                                    Remarks      = item.Remarks,
                                    PricePerUnit = item.PricePerUnit
                                };
                                db.INV_InvoiceItem.Add(newINV_InvoiceItemAdd);
                            }
                        }
                        inv_InvoiceViewModal.INV_InvoiceItems.ForEach(e =>
                        {
                            e.InvoiceID     = invoiceId;
                            e.InvoiceItemID = db.INV_InvoiceItem.Where(t => t.InvoiceID == invoiceId && t.ItemID == e.ItemID && t.Quantity == e.Quantity).FirstOrDefault().InvoiceItemID;
                        });
                        List <int>             getAllList  = inv_InvoiceViewModal.INV_InvoiceItems.Select(e => e.InvoiceItemID).ToList();
                        List <INV_InvoiceItem> removeRange = db.INV_InvoiceItem.Where(t => t.InvoiceID == invoiceId && !getAllList.Contains(t.InvoiceItemID)).Select(t => t).ToList();

                        db.INV_InvoiceItem.RemoveRange(removeRange);

                        INV_Invoice get_invoice = db.INV_Invoice.Where(e => e.InvoiceID == invoiceId).FirstOrDefault();

                        INV_InvoiceHistory Add_INV_InvoiceHistory = new INV_InvoiceHistory()
                        {
                            CompanyID      = get_invoice.CompanyID,
                            PartyID        = get_invoice.PartyID,
                            UserID         = get_invoice.UserID,
                            Amount         = get_invoice.Amount,
                            AmountReceived = get_invoice.AmountReceived,
                            StatusID       = get_invoice.StatusID,
                            Created        = get_invoice.Created,
                            Remarks        = get_invoice.Remarks,
                            InvoiceDate    = get_invoice.InvoiceDate,
                            InvoiceNo      = get_invoice.InvoiceNo,
                            PONo           = get_invoice.PONo,
                            AmountPending  = get_invoice.AmountPending,
                            FinYearID      = get_invoice.FinYearID,
                            CGST           = get_invoice.CGST,
                            CGSTAmount     = get_invoice.CGSTAmount,
                            SGST           = get_invoice.SGST,
                            SGSTAmount     = get_invoice.SGSTAmount,
                            IGST           = get_invoice.IGST,
                            IGSTAmount     = get_invoice.IGSTAmount,
                            IsLocal        = get_invoice.IsLocal,
                            //IsActive = get_invoice.IsActive==null? true : get_invoice.IsActive,//ask to kamal
                            Casar       = get_invoice.Casar,
                            TotalAmount = get_invoice.TotalAmount,
                            Operation   = "Invoice",
                            InvoiceID   = invoiceId
                        };
                        db.INV_InvoiceHistory.Add(Add_INV_InvoiceHistory);

                        if (Session["UserID"] != null)
                        {
                            get_invoice.UserID = Convert.ToInt16(Session["UserID"].ToString());
                        }

                        get_invoice.Amount         = inv_InvoiceViewModal.Amount;
                        get_invoice.AmountReceived = inv_InvoiceViewModal.AmountReceived;
                        get_invoice.StatusID       = 1;
                        get_invoice.Modified       = DateTime.Now;
                        get_invoice.Remarks        = inv_InvoiceViewModal.Remarks;
                        get_invoice.InvoiceDate    = inv_InvoiceViewModal.InvoiceDate;//ask to kamal
                        get_invoice.InvoiceNo      = get_invoice.InvoiceNo;
                        get_invoice.PONo           = inv_InvoiceViewModal.PONo;
                        get_invoice.AmountPending  = inv_InvoiceViewModal.AmountPending;
                        get_invoice.CGST           = inv_InvoiceViewModal.CGST;
                        get_invoice.CGSTAmount     = inv_InvoiceViewModal.CGSTAmount;
                        get_invoice.SGST           = inv_InvoiceViewModal.SGST;
                        get_invoice.SGSTAmount     = inv_InvoiceViewModal.SGSTAmount;
                        get_invoice.IGST           = inv_InvoiceViewModal.IGST;
                        get_invoice.IGSTAmount     = inv_InvoiceViewModal.IGSTAmount;
                        get_invoice.IsLocal        = inv_InvoiceViewModal.IsLocal;
                        get_invoice.Casar          = inv_InvoiceViewModal.Casar;
                        get_invoice.TotalAmount    = inv_InvoiceViewModal.TotalAmount;
                    }
                    else
                    {
                        INV_Invoice new_INV_Invoice = new INV_Invoice();
                        new_INV_Invoice.CompanyID = CommonConfig.GetCompanyID();
                        new_INV_Invoice.StatusID  = CommonConfig.GetStatusPending();
                        new_INV_Invoice.PartyID   = inv_InvoiceViewModal.PartyID;
                        if (Session["UserID"] != null)
                        {
                            new_INV_Invoice.UserID = Convert.ToInt16(Session["UserID"].ToString());
                        }

                        new_INV_Invoice.Amount         = inv_InvoiceViewModal.Amount;
                        new_INV_Invoice.AmountReceived = inv_InvoiceViewModal.AmountReceived;
                        new_INV_Invoice.StatusID       = CommonConfig.GetStatusPending();
                        new_INV_Invoice.Created        = DateTime.Now;
                        new_INV_Invoice.Modified       = DateTime.Now;
                        new_INV_Invoice.Remarks        = inv_InvoiceViewModal.Remarks;
                        new_INV_Invoice.InvoiceDate    = DateTime.Now;

                        #region Generate InvoiceNo
                        String _NewInvoiceNo = CommonConfig.GetNextNumber("Invoice");
                        #endregion Generate InvoiceNo
                        new_INV_Invoice.InvoiceNo = _NewInvoiceNo.ToString();

                        new_INV_Invoice.PONo          = inv_InvoiceViewModal.PONo;
                        new_INV_Invoice.AmountPending = 0;
                        new_INV_Invoice.FinYearID     = CommonConfig.GetFinYearID();
                        new_INV_Invoice.CGST          = inv_InvoiceViewModal.CGST == 0 ? null : inv_InvoiceViewModal.CGST;
                        new_INV_Invoice.CGSTAmount    = inv_InvoiceViewModal.CGST == 0 ? null : inv_InvoiceViewModal.CGSTAmount;
                        new_INV_Invoice.SGST          = inv_InvoiceViewModal.SGST == 0 ? null : inv_InvoiceViewModal.SGST;
                        new_INV_Invoice.SGSTAmount    = inv_InvoiceViewModal.SGST == 0 ? null : inv_InvoiceViewModal.SGSTAmount;
                        new_INV_Invoice.IGST          = inv_InvoiceViewModal.IGST == 0 ? null : inv_InvoiceViewModal.IGST;
                        new_INV_Invoice.IGSTAmount    = inv_InvoiceViewModal.IGST == 0 ? null : inv_InvoiceViewModal.IGSTAmount;
                        new_INV_Invoice.IsLocal       = inv_InvoiceViewModal.IsLocal;
                        new_INV_Invoice.IsActive      = true;
                        new_INV_Invoice.Casar         = inv_InvoiceViewModal.Casar;
                        new_INV_Invoice.TotalAmount   = inv_InvoiceViewModal.TotalAmount;

                        db.INV_Invoice.Add(new_INV_Invoice);

                        int newInvoiceId = new_INV_Invoice.InvoiceID;
                        List <INV_InvoiceItem> newList_INV_InvoiceItem = new List <INV_InvoiceItem>();
                        foreach (var item in inv_InvoiceViewModal.INV_InvoiceItems)
                        {
                            INV_InvoiceItem new_INV_InvoiceItem = new INV_InvoiceItem();
                            new_INV_InvoiceItem.InvoiceItemID = item.InvoiceItemID;
                            new_INV_InvoiceItem.InvoiceID     = newInvoiceId;
                            new_INV_InvoiceItem.ItemID        = item.ItemID;
                            new_INV_InvoiceItem.Quantity      = item.Quantity;
                            new_INV_InvoiceItem.Created       = DateTime.Now;
                            new_INV_InvoiceItem.Modified      = DateTime.Now;
                            new_INV_InvoiceItem.Remarks       = item.Remarks;
                            new_INV_InvoiceItem.PricePerUnit  = item.PricePerUnit;

                            #region INV_ItemPrice
                            INV_ItemPrice _iNV_ItemPrice = new INV_ItemPrice();
                            _iNV_ItemPrice = db.INV_ItemPrice.Where(M => M.ItemID == item.ItemID && M.PurchasePrice == item.PricePerUnit).OrderByDescending(o => o.Created).FirstOrDefault();
                            if (_iNV_ItemPrice == null)
                            {
                                _iNV_ItemPrice               = new INV_ItemPrice();
                                _iNV_ItemPrice.ItemID        = item.ItemID;
                                _iNV_ItemPrice.PurchasePrice = item.PricePerUnit;
                                _iNV_ItemPrice.Created       = DateTime.Now;
                                _iNV_ItemPrice.Modified      = DateTime.Now;
                                _iNV_ItemPrice.FinYearID     = CommonConfig.GetFinYearID();
                                if (Session["UserID"] != null)
                                {
                                    _iNV_ItemPrice.UserID = Convert.ToInt16(Session["UserID"].ToString());
                                }
                                db.INV_ItemPrice.Add(_iNV_ItemPrice);
                            }
                            #endregion INV_ItemPrice

                            INV_Item _INV_Item = new INV_Item();
                            _INV_Item = db.INV_Item.Where(i => i.ItemID == item.ItemID).FirstOrDefault();
                            if (_INV_Item != null)
                            {
                                if (_INV_Item.Quantity - item.Quantity < 0)
                                {
                                    validMsg += "<br>Insufficient Stock for " + _INV_Item.ItemName;
                                    ModelState.AddModelError("Insufficient Stock", "Insufficient Stock for " + _INV_Item.ItemName);
                                    //return Json("failure", JsonRequestBehavior.AllowGet);
                                }
                                _INV_Item.Quantity = _INV_Item.Quantity - item.Quantity;


                                INV_StockHistory new_INV_StockHistory = new INV_StockHistory();
                                new_INV_StockHistory.ItemID          = item.ItemID;
                                new_INV_StockHistory.OperationTypeID = 8;
                                new_INV_StockHistory.ReferenceID     = _NewInvoiceNo.ToString();
                                new_INV_StockHistory.Quantity        = item.Quantity;
                                if (Session["UserID"] != null)
                                {
                                    new_INV_StockHistory.UserID = Convert.ToInt16(Session["UserID"].ToString());
                                }
                                new_INV_StockHistory.Created   = DateTime.Now;
                                new_INV_StockHistory.Modified  = DateTime.Now;
                                new_INV_StockHistory.Remarks   = "Issue";
                                new_INV_StockHistory.FinYearID = CommonConfig.GetFinYearID();

                                new_INV_StockHistory.IssueNumber = _NewInvoiceNo;
                                db.INV_StockHistory.Add(new_INV_StockHistory);
                            }
                            newList_INV_InvoiceItem.Add(new_INV_InvoiceItem);
                        }
                        db.INV_InvoiceItem.AddRange(newList_INV_InvoiceItem);
                    }
                }
                if (ModelState.IsValid)
                {
                    db.SaveChanges();
                    return(Json("Sucess", JsonRequestBehavior.AllowGet));
                }
                else
                {
                    return(Json(validMsg, JsonRequestBehavior.AllowGet));
                }
            }
            catch (Exception ex)
            {
                return(Json("failure", JsonRequestBehavior.AllowGet));
            }
        }
        public ActionResult Edit([Bind(Include = "InvoiceID,UserID,Amount,AmountReceived,StatusID,Created,Modified,Remarks,InvoiceDate,InvoiceNo,PONo,AmountPending,FinYearID,CGST,CGSTAmount,SGST,SGSTAmount,IGST,IGSTAmount,IsLocal,IsActive,Casar,TotalAmount,NewAmountPending,NewAmountReceived")] INV_Invoice iNV_Invoice)
        {
            if (iNV_Invoice.InvoiceID > 0)
            {
                if (iNV_Invoice.Remarks == null || iNV_Invoice.Remarks == "")
                {
                    ViewBag.CGST      = new SelectList(db.ACC_Tax.Where(a => a.TaxType == "CGST"), "TaxID", "Tax", iNV_Invoice.CGST);
                    ViewBag.IGST      = new SelectList(db.ACC_Tax.Where(a => a.TaxType == "IGST"), "TaxID", "Tax", iNV_Invoice.IGST);
                    ViewBag.SGST      = new SelectList(db.ACC_Tax.Where(a => a.TaxType == "SGST"), "TaxID", "Tax", iNV_Invoice.SGST);
                    ViewBag.CompanyID = new SelectList(db.SYS_Company, "CompanyID", "CompanyName", iNV_Invoice.CompanyID);
                    ViewBag.FinYearID = new SelectList(db.SYS_FinYear, "FinYearID", "FinYear", iNV_Invoice.FinYearID);
                    ViewBag.PartyID   = new SelectList(db.MST_Party, "PartyID", "PartyName", iNV_Invoice.PartyID);
                    ViewBag.StatusID  = new SelectList(db.SYS_Status, "StatusID", "StatusName", iNV_Invoice.StatusID);
                    ViewBag.UserID    = new SelectList(db.SEC_User, "UserID", "UserName", iNV_Invoice.UserID);
                    ModelState.AddModelError("", "Enter Remarks");
                    return(View(iNV_Invoice));
                }
            }
            if (ModelState.IsValid)
            {
                INV_Invoice getInvoiceData = db.INV_Invoice.Where(e => e.InvoiceID == iNV_Invoice.InvoiceID).FirstOrDefault();

                INV_InvoiceHistory add_INV_InvoiceHistory = new INV_InvoiceHistory();
                add_INV_InvoiceHistory.CompanyID      = getInvoiceData.CompanyID;
                add_INV_InvoiceHistory.PartyID        = getInvoiceData.PartyID;
                add_INV_InvoiceHistory.UserID         = getInvoiceData.CompanyID;
                add_INV_InvoiceHistory.Amount         = getInvoiceData.Amount;
                add_INV_InvoiceHistory.AmountReceived = getInvoiceData.AmountReceived;
                add_INV_InvoiceHistory.StatusID       = getInvoiceData.StatusID;
                add_INV_InvoiceHistory.Created        = getInvoiceData.Created;
                add_INV_InvoiceHistory.Remarks        = getInvoiceData.Remarks;
                add_INV_InvoiceHistory.InvoiceDate    = getInvoiceData.InvoiceDate;
                add_INV_InvoiceHistory.InvoiceNo      = getInvoiceData.InvoiceNo;
                add_INV_InvoiceHistory.PONo           = getInvoiceData.PONo;
                add_INV_InvoiceHistory.AmountPending  = getInvoiceData.AmountPending;
                add_INV_InvoiceHistory.FinYearID      = CommonConfig.GetFinYearID();
                add_INV_InvoiceHistory.CGST           = getInvoiceData.CGST;
                add_INV_InvoiceHistory.CGSTAmount     = getInvoiceData.CGSTAmount;
                add_INV_InvoiceHistory.SGST           = getInvoiceData.SGST;
                add_INV_InvoiceHistory.SGSTAmount     = getInvoiceData.SGSTAmount;
                add_INV_InvoiceHistory.IGST           = getInvoiceData.IGST;
                add_INV_InvoiceHistory.IGSTAmount     = getInvoiceData.IGSTAmount;
                add_INV_InvoiceHistory.IsLocal        = getInvoiceData.IsLocal;
                add_INV_InvoiceHistory.IsActive       = true;
                add_INV_InvoiceHistory.Casar          = getInvoiceData.Casar;
                add_INV_InvoiceHistory.TotalAmount    = getInvoiceData.TotalAmount;
                add_INV_InvoiceHistory.Operation      = "Operation";
                add_INV_InvoiceHistory.InvoiceID      = getInvoiceData.InvoiceID;

                db.INV_InvoiceHistory.Add(add_INV_InvoiceHistory);
                //db.SaveChanges();
                //db.Entry(iNV_Invoice).State = EntityState.Modified;
                if (Session["UserID"] != null)
                {
                    getInvoiceData.UserID         = Convert.ToInt16(Session["UserID"].ToString());
                    getInvoiceData.Modified       = DateTime.Now;
                    getInvoiceData.AmountReceived = iNV_Invoice.NewAmountReceived;
                    getInvoiceData.AmountPending  = getInvoiceData.AmountPending - iNV_Invoice.NewAmountReceived;
                }

                db.SaveChanges();
                return(RedirectToAction("Index"));
            }
            ViewBag.CGST      = new SelectList(db.ACC_Tax.Where(a => a.TaxType == "CGST"), "TaxID", "Tax", iNV_Invoice.CGST);
            ViewBag.IGST      = new SelectList(db.ACC_Tax.Where(a => a.TaxType == "IGST"), "TaxID", "Tax", iNV_Invoice.IGST);
            ViewBag.SGST      = new SelectList(db.ACC_Tax.Where(a => a.TaxType == "SGST"), "TaxID", "Tax", iNV_Invoice.SGST);
            ViewBag.CompanyID = new SelectList(db.SYS_Company, "CompanyID", "CompanyName", iNV_Invoice.CompanyID);
            ViewBag.FinYearID = new SelectList(db.SYS_FinYear, "FinYearID", "FinYear", iNV_Invoice.FinYearID);
            ViewBag.PartyID   = new SelectList(db.MST_Party, "PartyID", "PartyName", iNV_Invoice.PartyID);
            ViewBag.StatusID  = new SelectList(db.SYS_Status, "StatusID", "StatusName", iNV_Invoice.StatusID);
            ViewBag.UserID    = new SelectList(db.SEC_User, "UserID", "UserName", iNV_Invoice.UserID);
            return(View(iNV_Invoice));
        }