c# - 如何在字典初始化中声明事件？

Question

我正在创建一个事件字典，我想在该字典的初始化中声明这些事件，而不是在其他地方声明它们并将链接放置到字典中。

    static event EventDelegate Event1;
    static event EventDelegate Event2;
    static event EventDelegate Event3;

    public enum EventTypes
    {
        Event1, 
        Event2,
        Event3,
    }

    public static Dictionary<EventTypes, EventDelegate> events = new Dictionary<EventTypes, EventDelegate>
    {
        {EventTypes.Event1, Event1},
        {EventTypes.Event2, Event2},
        {EventTypes.Event3, Event3},
    };

所以我想做这样的事情：

{EventTypes.Event1, new event EventDelegate Event1}

那可能吗？

标签： c#

Answer 1

如何包装事件？

class MyEventWrapper
{
    public event EventDelegate Handlers;

    public void Raise(object sender, EventArgs args)
    {
        Handlers?.Invoke(sender, args);
    }
}

//

Dictionary<EventTypes, MyEventWrapper> eventMap = new Dictionary<EventTypes, MyEventWrapper>
{
    { EventTypes.Event1, new MyEventWrapper() },
    { EventTypes.Event2, new MyEventWrapper() },
};

//

eventMap[EventTypes.Event1].Handlers += (s, a) => { };
eventMap[EventTypes.Event2].Handlers += (s, a) => { };

//

eventMap[EventTypes.Event1].Raise(this, new EventArgs());