I am trying to add a listener to an event through a function.
event Action ExampleEvent; void AddListener(Action emitter, Action receiver) { emitter += receiver; } Then somewhere I call it like this:
AddListener(ExampleEvent, () => Console.WriteLine("Example event received")); ExampleEvent?.Invoke(); But there is no output. I don't see what's missing.
You should use ref keyword like this.
event Action ExampleEvent; void AddListener(ref Action emitter, Action receiver) { emitter += receiver; } // Usage AddListener(ref ExampleEvent, () => Console.WriteLine("Example event received")); ExampleEvent?.Invoke(); Because Action instances are like a pointer (or a list of pointers) to a function(s) and they will be passed by value as a parameter. So, in order to pass them by reference, you need to use the ref keyword.
