如何使用无限滚动将固定定位的摘要行添加到网格中

I have a grid with infinite scrolling.Is it possible to add a summary row to the grid with fixed position i.e bottom of the grid. Whenever the grid is scrolled to the threshold the store loads with new page data,at the same time summary data should also be refreshed. Any ideas or suggestions?I have a grid with infinite scrolling.Is it