DataTable in Flutter, Sorting multiple columns?

Question

This question is actually sort of simple, but: Is it possible to sort a DataTable on more than one column? So that the user can decide if it should be sorted on for example Name or Year?

If possible how do you implement it?

Solution

you can use onSort in every column like this

 DataColumn(
        label:  Text('name'),
        onSort: (columnIndex, sortAscending) {
          setState(() {
            if (columnIndex == _sortColumnIndex) {
              _sortAsc = _sortNameAsc = sortAscending;
            } else {
              _sortColumnIndex = columnIndex;
              _sortAsc = _sortNameAsc;
            }
            _persons.sort((a, b) => a.name.compareTo(b.name));
          });
        },
       ),