如何通过C#中的接口实现事件？

public interface IEvent
{
    void OnEvent();
}

public class MyClass : IEvent
{
    public void OnEvent()
    {
        // 事件处理逻辑
    }
}

public class EventTrigger
{
    public delegate void EventHandler(object sender, EventArgs e);

    public event EventHandler MyEvent;
}

public class EventTrigger
{
    public delegate void EventHandler(object sender, EventArgs e);

    public event EventHandler MyEvent;

    public void TriggerEvent()
    {
        MyEvent?.Invoke(this, EventArgs.Empty);
    }
}

var eventTrigger = new EventTrigger();
eventTrigger.MyEvent += OnEvent;

private void OnEvent(object sender, EventArgs e)
{
    // 事件处理逻辑
}