public List <int> getSelectIndex()
        {
            List <int> selectIndex = new List <int>();
            int        i           = 0;

            foreach (UIElement ui in list.Children)
            {
                SelectTableItem st = ui as SelectTableItem;
                if (st.IsSelect())
                {
                    selectIndex.Add(i);
                }
                i++;
            }
            return(selectIndex);
        }