private void PrepareInvoiceDetailsInsertQueryParameters(int invoiceId, NpgsqlCommand com, InvoiceDetails item)
{
com.Parameters[0].Value = invoiceId;
com.Parameters[1].Value = item.Price;
com.Parameters[2].Value = item.Quantity;
com.Parameters[3].Value = item.TotalPrice;
com.Parameters[4].Value = item.Discount;
com.Parameters[5].Value = item.GetIDAso();
com.Parameters[6].Value = item.Description;
}
public void AddInvoiceItem(InvoiceDetails invoiceItem)
{
invoiceItems.Add(invoiceItem);
}