// Assumption: Subtotal has been calculated already
static void calculateTotalForItem(InvoiceItem item, decimal TaxRate)
{
// TaxRate and Discount should both be decimals, but they're not, so, whee, dumb math to do.
item.Total = (item.SubTotal * (1m - item.Discount / 100m)) * (1m + (item.Taxable ? TaxRate : 0m));
}
static decimal getCommissionForItem(InvoiceItem item, decimal CommissionRate)
{
// Okay, so, I'm ignoring tax entirely when looking at the commission. It's factored in before tax (per instructions),
// and it itself doesn't get taxed (because it seemed that the commission was meant to be for the entire invoice, and tax is calculated on a per-line basis)
return (item.SubTotal * (1m - item.Discount/100m)) * CommissionRate;
}
static void calculateSubTotalForItem(InvoiceItem item)
{
item.SubTotal = item.UnitPrice * item.Quantity;
}
