For large data sets or when the exact data records count cannot be determined in advance, you can supply data to the Grid while you scroll when the user reaches the bottom of the grid. In this case, the Grid's scrolling is called infinite scrolling mode. The scrollbar reflects the currently loaded amount of data. When new data records are supplied, the scroll bar re-adjusts its size and allows you to scroll and view the newly loaded data records. To illustrate the infinite scrolling functionality of Smart.Grid, we prepared this demo:

Demo: Grid Infinite Scroll