|Boolean||A boolean expression indicating whether the sort icon is visible on column's header, if the column was sorted by clicking in its header.|
Use the DisplaySortIcon property to hide the icon of the column. Use the SortOnClick property to disable sorting columns by clicking in column's header. Use the SortChildren property of the Items object to sort by a column. Use the SortOrder property to sort a column. Use the SingleSort property to allow multiple sort columns.