.net - Subscribing To An Event Defined In The Base User Control?

I have a base user control (inherited from System.Web.UI.UserControl)

public delegate void MyEventHandler(object sender, MyEventArgs e);
public event MyEventHandler ControlLoaded;
//Fire the event from here
protected override void OnLoad(EventArgs e)
{
MyEventArgs cmdEventArgs = new MyEventArgs("somearg");
ControlLoaded(this, cmdEventArgs);
}

I have several controls that are derived from this base user control.

On the host ASPX page, I need to subscribe to the ControlLoaded event.

protected void Page_Load(object sender, EventArgs e)
{
//subscribe to the event
//This line DOES NOT WORK as I cannot attach event to a base control - It needs an instance of the user control which I don't have
BaseUserControl.ControlLoaded += new MyEventHandler(ControlLoaded);
}
private void ControlLoaded(object sender, MyEventArgs e)
{
// some control has been loaded
}


How do I subscribe to the ControlLoaded event?