Detecting which RadioElement has been tapped

Hi,

If I have a pile of UIButtons, I can use the same TouchUpInside event handler for each button like this

private void ButtonClicked(object s, EventArgs e)
{
   UIButton btn = (UIButton)s;
   switch(btn.Tag)
   { // }
}

RadioElements use Tapped NSAction. Is there a way I can detect which RadioElement has been tapped? I need it for a configuration system.

Paul