Hi Tim,

That event structure you posted is the old method of doing it. .Net 3.5 introduced generic event handlers allowing you to do this (with all of the plumbing wired for you automatically):

        public event EventHandler<NavBarGroupChangedEventArgs> NavBarGroupChanged;

        /// <summary>
        /// Triggers the NavBarGroupChanged event.
        /// </summary>
        public void RaiseNavBarGroupChanged(string group, string lastGroup, NavBarControl control)
        {
            var handler = this.NavBarGroupChanged;
            if (handler != null)
            {
                handler(this, new NavBarGroupChangedEventArgs(group, lastGroup, control));
            }
        }