Question

I have interface with the event.
My class implements the interface.

The logic of the class requires to fix all the facts subscription and unsubscribe from the event.

How to implement interception subscriptions and unsubscribe from the event?

Answer 1

Try this:

    private event EventHandler<EventArgs> shibby;

    public event EventHandler<EventArgs> Shibby
    {
        add
        {
            // your logic here
            this.shibby += value;
            // or here
        }
        remove
        {
            // your logic here
            this.shibby -= value;
            // or here
        }
    }