public void SetFare(double f)
{
ValueChangeEventArg arg = new ValueChangeEventArg(fare, f);
fare = f;
FareChangeEvent(this, arg);
}
static void OnValueChange(object sender, ValueChangeEventArg args)
{
Console.WriteLine("old value is {0}, new value is {1}", args.getOldValue(), args.getNewValue());
}
static void OnValueChange(object sender, ValueChangeEventArg args)
{
Console.WriteLine("old value is {0}, new value is {1}", args.getOldValue(), args.getNewValue());
}