public double InvoiceTotal(InvoiceDetail[] items)
{
double total = 0;
foreach (var i in items)
{
total += i.DblLineTotal;
}
return total;
}
//general purpose constructor
public ReceivableInvoice(InvoiceDetail[] items)
: base(items)
{
}
//general purpose constructor
public OutgoingInvoice(InvoiceDetail[] items)
: base(items)
{
}
//general purpose constructor
public Invoice(InvoiceDetail[] items)
{
InvoiceNumber = sequence_id++;
InvoiceItems = items;
}
//copy constructor
public InvoiceDetail(InvoiceDetail i)
: this(i.DblLineTotal)
{
}