using (var writer = new StreamWriter(filePath, false))
        {
           foreach (Product product in pm.GetAll())
            {
                    fp = pm.MakeFinal(product);

                    curLine.Append(fp.InventoryNumber + "t");
                    curLine.Append(fp.SellerCost + "t");
                    curLine.Append(fp.RetailPrice + "t");
                    curLine.Append(fp.StartingBid + "t");
                    curLine.Append(fp.BINPrice + "t");
                    curLine.Append(fp.CAPrice + "t");
                    curLine.Append(fp.Weight + "t");
                    curLine.Append(fp.Length + "t");
                    curLine.Append(fp.Width + "t");
                    curLine.Append(fp.Height + "t");
                    curLine.Append(fp.Brand + "t");
                    curLine.Append(fp.Manufacturer + "t");
                    curLine.Append(fp.MPN + "t");
                    curLine.Append(fp.Quantity);

                    writer.WriteLine(curLine.ToString());
            }
        }

<security>
  <requestFiltering>
    <requestLimits maxAllowedContentLength="2000000000" />
  </requestFiltering>
</security>