Sorting
FkexGrid supports sorting via source CollectionView.
By default, clicking on any column header sorts the data based on the column that is clicked. Clicking the same column header again reverts the sort order. Control-clicking the column header removes the sort.
You may customize the sorting behavior using the grid's showSort and allowSorting properties. You can disable sorting on specific columns by setting the column's allowSorting property to false.
The grid below does not allow sorting by 'ID'. All other columns support sorting.
Although the CollectionView class supports sorting
on multiple properties, the grid does not provide a UI
for that. You can build your own Excel-style sort dialogs
if you need that functionality.