The grid may be sorted by a call to the C1.Win.C1FlexGrid.C1FlexGridBase.Sort method, by a user clicking a column header, or as a result of sorting applied directly to the object that is being used as the grid's C1.Win.C1FlexGrid.C1FlexGridBase.DataSource.
To determine the current sort direction, use the sorted column's C1.Win.C1FlexGrid.Column.Sort property.
If the grid is not currently sorted, this property returns null.