TaxRate GetRate(Order order)
{
var rates = _taxRepository.GetTaxRates().ToList();
//check the ZIP first - this allows zip-based overrides for places
//like Universities, that may have 4% lower tax
TaxRate result = (from r in rates
where r.Zip == order.ShippingAddress.Zip
select r).SingleOrDefault();
if (result == null)
{
result = (from rs in rates
where rs.Region == order.ShippingAddress.StateOrProvince &&
rs.Country == order.ShippingAddress.Country
select rs).SingleOrDefault();
}
return(result);
}