/// <summary>
        ///     Inserts the specified item at the desired index
        /// </summary>
        /// <param name="index">Desired index of the item</param>
        /// <param name="item">Item to insert</param>
        public override void Insert(int index, RibbonItem item)
        {
            CheckRestrictions(item as RibbonButton);

            item.SetOwner(Owner);
            item.SetOwnerPanel(OwnerPanel);
            item.SetOwnerTab(OwnerTab);
            item.SetOwnerItem(OwnerList);

            base.Insert(index, item);
        }
        /// <summary>
        ///     Adds the specified item to the collection
        /// </summary>
        public override void Add(RibbonItem item)
        {
            CheckRestrictions(item as RibbonButton);

            item.SetOwner(Owner);
            item.SetOwnerPanel(OwnerPanel);
            item.SetOwnerTab(OwnerTab);
            item.SetOwnerItem(OwnerList);

            item.Click += _ownerList.item_Click;

            base.Add(item);
        }