public void ModifyOrder(int id, decimal totalDue)
{
using (IRepository repository = CreateUnitOfWork())
{
SalesOrderHeader order = repository
.GetEntities <SalesOrderHeader>().FirstOrDefault(o => o.Id == id);
order.TotalDue = totalDue;
order.TaxAmt = CalculateTax(order);
repository.SaveChanges();
}
}
private decimal CalculateTax(SalesOrderHeader order)
{
throw new NotImplementedException();
}