public void ReceiveBill(object src, BillArgs ea)
{
BookKeeper sender = src as BookKeeper;
Console.WriteLine("Paying to " + sender);
sender.Post(this, ea.Cost);
}
public void ReceivePayment(object src, BillArgs ea)
{
BookKeeper sender = src as BookKeeper;
Console.WriteLine("Received payment from " + sender);
sender.Post(this, 10.0);
}
