How can I work with explicit interface events?

Question

So, I made several such interfaces:

public interface IDrawActions : ISimpleDrawable
{
    Action<GameTime> PreDrawAction { get; set; }
    Action<GameTime> PostDrawAction { get; set; }

    event EventHandler PreDrawActionChanged;
    event EventHandler PostDrawActionChanged;
}

Any classes that implement this (or several) of these interfaces have become messy, so I thought it made sense to use an explicit implementation of the interface to hide unusual events and properties. But doing this, I got a compiler error:

An explicit interface implementation for an event must use event access syntax

And Googling will lead me to this pretty useful blog post :

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Answer 1

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VG.net:

    private static readonly int MouseDownEvent = EventsProperty.CreateEventKey();

    public event ElementMouseEventHandler MouseDown
    {
        add { AddHandler(MouseDownEvent, value); }
        remove { RemoveHandler(MouseDownEvent, value); }
    }

    public virtual void OnMouseDown(ElementMouseEventArgs args)
    {
        ElementMouseEventHandler handler = 
            FindHandler(MouseDownEvent) as ElementMouseEventHandler;
        if (handler != null)
            handler(this, args);
    }

    internal void AddHandler(int key, Delegate value)
    {
        EventsProperty p = (EventsProperty)GetOrInsertProperty(EventsProperty.Key);
        p.AddHandler(key, value);
    }

    internal void RemoveHandler(int key, Delegate value)
    {
        EventsProperty p = (EventsProperty)GetProperty(EventsProperty.Key);
        if (p == null)
            return;
        p.RemoveHandler(key, value);
    }

    internal Delegate FindHandler(int key)
    {
        EventsProperty p = (EventsProperty)GetProperty(EventsProperty.Key);
        if (p == null)
            return null;
        return p[key];
    }

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