Is it possible to subscribe to event subscriptions in C #?

Question

If I have an event like this:

public delegate void MyEventHandler(object sender, EventArgs e); public event MyEventHandler MyEvent; 

And adds an event handler as follows:

 MyEvent += MyEventHandlerMethod; 

... is it possible to somehow register this? In other words - is it possible to have something like:

 MyEvent.OnSubscribe += MySubscriptionHandler; 

Answer 1

Like automatically implemented properties, events are also automatically executed by default.

You can expand the event declaration as follows:

 public event MyEventHandler MyEvent { add { ... } remove { ... } } 

See, for example, How to Use a Dictionary to Store Event Instances (C # Programming Guide)

See Events a bit redesigned in C # 4, part I: Locks for how auto-injection events differ between C # and nbsp; 3 and C # 4.

Answer 2

It is possible to declare event accessors specifically, i.e. add and remove accessors.

This allows you to do custom logic when adding new event handlers.

Answer 3

When you define your events, you can use a longer format to execute more code when people join or remove from your events.

View information on add and remove keywords.

Answer 4

Perhaps if you declare your custom event, for example, this pseudocode:

 class MyClass { public event EventHandler MyEvent { add { //someone subscribed to this event ! } remove { //someone unsubscribed from this event ! } } ... } 

Answer 5

I assume that you are looking for access to events. A way to configure subscriber links. Here is how you can do it.

 public class TestClass { private event EventHandler UnderlyingEvent; public event EventHandler TestEvent { add { UnderlyingEvent += value; } remove { UnderlyingEvent -= value; } } } 

For more information, please visit this article.

http://msdn.microsoft.com/en-us/magazine/cc163533.aspx