I have a listview, it has a datatable. How do I make the column names fixed so that when scrolling I can see the column names. ``` table = ft.DataTable( columns=[ ft.DataColumn(ft.Text("Fisrt")), ft.DataColumn(ft.Text("Second")), ], rows=rows, ) listview = ft.ListView(expand=1, spacing=10, padding=20, on_scroll_interval=20) listview.controls.append(table) listview.on_scroll = on_scroll_event ```
I have a listview, it has a datatable. How do I make the column names fixed so that when scrolling I can see the column names.