Findcontrol using a non recursive approach

public static List<control> FindControls( Control controlTop )
{
    List<control> list = new List<control>();
 
    list.Add(controlTop);
 
    for (int i = 0; i < list.Count; ++i)
    {
        list.AddRange(list[i].Controls);
    }
 
    return list;
}