static void stock_PriceChanged(object sender, PriceChangedEventArgs e)
{
if ((e.NewPrice - e.LastPrice) / e.LastPrice > 0.1M)
{
Console.WriteLine("Alert, 10% stock price increase!");
}
}
//[Conditional("DEBUG")]
private static void Stock_changed(object sender, PriceChangedEventArgs e)
{
if ((e.newPrice - e.oldPrice) > 0)
{
Console.WriteLine("成功");
}
else
{
Console.WriteLine("失败");
}
}
public EventHandler <PriceChangedEventArgs> PriceCharged;//这个泛型委托满足三要素
protected virtual void OnPriceChanged(PriceChangedEventArgs e)
{
PriceCharged?.Invoke(this, e);
}
