在C#中继承事件处理程序

public class MyBase
{
    public delegate void MyEventHandler(object sender, EventArgs e);

    public event MyEventHandler MyEvent;

    public void OnEvent(object sender, EventArgs e)
    {
        if (MyEvent != null)
        {
            MyEvent(sender, e);
        }
    }
}

public class MyDerived : MyBase
{
    public override void OnEvent(object sender, EventArgs e)
    {
        base.OnEvent(sender, e);

        // 在这里处理 MyEvent 事件的不同逻辑...
    }
}

public static void Main(string[] args)
{
    MyDerived instance = new MyDerived();
    instance.MyEvent += new MyHandler(handler);

    Console.WriteLine("Waiting for event...");

    instance.OnEvent(instance, null);
}

private static void handler(object sender, EventArgs e)
{
    Console.WriteLine("Event received!");
}