C＃反思：如何獲得私人活動？

Question

是否可以使用反射獲取類的私有事件？ 下面的代碼無法獲取該事件：

//class having a private Event.
public class Sample
{
    private delegate void MyDelegate(string ip4);
    private event MyDelegate MyEvent;
}

internal class Program
{
    private static void Main(string[] args)
    {
        //try getting the non-public event
        EventInfo[] events = typeof (Sample).GetEvents(BindingFlags.NonPublic);
        Console.WriteLine(events.Length); //it's 0
        var evt = typeof (Sample).GetEvent("MyEvent", BindingFlags.NonPublic); //evt is null
    }
}

Answer 1

您還需要指定BindingFlags.Instance ..

var evt = typeof (Sample)
  .GetEvent("MyEvent", BindingFlags.NonPublic | BindingFlags.Instance); //evt is null

Answer 2

var evt = typeof(Sample).GetEvent("MyEvent", BindingFlags.NonPublic | BindingFlags.Instance);