c-

c#自建库 c#bool，int，double变化时事件 . . private DoubleWrapper doubleWrapper = new DoubleWrapper(); doubleWrapper.DoubleChanged += DoubleWrapper_DoubleChanged; doubleWrapper.Value = 3.14; doubleWrapper.Value = 2.718; }

private static void DoubleWrapper_DoubleChanged(object sender, DoubleChangedEventArgs e)
{
    Console.WriteLine($"Double value changed to: {e.NewValue}");
}

} ..