Question

I have a abstact class named Organism which has a Born event. Also I have some classes that inherit the Organism class… So my question is how can I raise the Born event among all instances of all classes, which inherited the Organism class?

EDIT: Sorry, The event I meant to write was Tick not Born… Born is a instance level event…

Answer 1

It isn’t great, but this might work:

public abstract class Organism : IDisposable
{
    private static readonly List<Organism> LiveOrganisms = 
        new List<Organism>();

    private event EventHandler onBorn;

    public void InvokeBorn(EventArgs e)
    {

        foreach (var liveOrganism in LiveOrganisms
            .Where(liveOrganism => liveOrganism.onBorn != null))
        {
            liveOrganism.onBorn(this, e);
        }
    }

    public event EventHandler Born
{
    add
    {
        onBorn += value;
    }
    remove
    {
        onBorn -= value;
    }
}

    protected Organism()
    {
        LiveOrganisms.Add(this);
    }

    public void Dispose()
    {
        LiveOrganisms.Remove(this);
    }
}