Question Object reference not set to an instance of an object.

[Emmanuelfk]

public ActionResult SaveSales(SalesModel ObjSalesModel)
{
if (ObjSalesModel == null || ObjSalesModel.tblSales == null)
{
return Json(new { result = false, message = "Invalid data received." }, JsonRequestBehavior.AllowGet);
}

try
{
decimal Vat = 0;
decimal CostPrice = 0;
decimal SellingPrice = 0;
decimal vat = Vat;
decimal costPrice = CostPrice;
decimal sellingPrice = SellingPrice;
decimal Profit = sellingPrice - costPrice;
decimal Vatpercent = (vat / 100) * sellingPrice;

tblSale ObjSales = new tblSale();
ObjSales.OrderDate = DateTime.Now.ToString("dd-MM-yyyy HH:mm:ss");
ObjSales.TransactionNo = string.Format("{0:ddMMMyyyyHHmmss}", DateTime.Now);
ObjSales.Amount = ObjSalesModel.tblSales.Amount;
ObjSales.Discount = ObjSalesModel.tblSales.Discount;
ObjSales.Tax = Vatpercent;
ObjSales.GrandTotal = ObjSalesModel.tblSales.GrandTotal;
ObjSales.Profit = Profit;
//ObjSales.UserID = ObjSalesModel.UserID;

objASPNETPHARMACYDBEntities.tblSales.Add(ObjSales);
objASPNETPHARMACYDBEntities.SaveChanges();

foreach (var sales in ObjSalesModel.SalesItems)
{
tblSalesItem ObjSalesItem = new tblSalesItem();
{
ObjSalesItem.StockID = sales.StockID;
ObjSalesItem.SalesID = ObjSales.SalesID; // Use the newly generated SalesID
ObjSalesItem.Qty = sales.Qty;
ObjSalesItem.Rate = sales.Rate;
ObjSalesItem.Amount = sales.Amount;
};
objASPNETPHARMACYDBEntities.tblSalesItems.Add(ObjSalesItem);
objASPNETPHARMACYDBEntities.SaveChanges();

var ObjtblStock = objASPNETPHARMACYDBEntities.tblStocks.Where(x => x.StockID == sales.StockID).FirstOrDefault();
if (ObjtblStock != null)
{

decimal itemcostPrice = Convert.ToDecimal(ObjtblStock.CostPrice);
decimal salesPrice = Convert.ToDecimal(ObjtblStock.SellingPrice);
decimal profit = salesPrice - itemcostPrice;
decimal vatAmount = (vat / 100) * sellingPrice;
// Update the sales item with calculated values
sales.Amount = Convert.ToDecimal(sellingPrice * sales.Qty);
ObjSales.Profit = profit * sales.Qty;
ObjSales.Tax = vatAmount * sales.Qty;

ObjtblStock.Qty = ObjtblStock.Qty - sales.Qty;
objASPNETPHARMACYDBEntities.Entry(ObjtblStock).State = EntityState.Modified;

objASPNETPHARMACYDBEntities.SaveChanges();
}
}

return Json(new { result = true, message = "Sales successfully saved!", TransactionNo = ObjSales.TransactionNo }, JsonRequestBehavior.AllowGet);
}
catch (System.Data.Entity.Validation.DbEntityValidationException dbEx)
{
Exception raise = dbEx;
foreach (var vailidationErrors in dbEx.EntityValidationErrors)
{
foreach (var validationError in vailidationErrors.ValidationErrors)
{
string message = string.Format("{0}:{1}",
vailidationErrors.Entry.Entity.ToString(),
validationError.ErrorMessage);
raise = new InvalidOperationException(message, raise);
}
}
throw raise;
//return Json(new { result = false, message = ex.Message }, JsonRequestBehavior.AllowGet);
}
}

 

[JohnH]

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