次のサンプルコードは、EnhancedFilterSortingModeプロパティを設定します。
fpSpread1.Sheets[0].Columns[0, 2].AllowAutoFilter = true;
fpSpread1.Sheets[0].AutoFilterMode = FarPoint.Win.Spread.AutoFilterMode.EnhancedContextMenu;
fpSpread1.Sheets[0].EnhancedFilterSortingMode = FarPoint.Win.Spread.EnhancedFilterSortingMode.Text;
FpSpread1.Sheets(0).Columns(0, 2).AllowAutoFilter = true
FpSpread1.Sheets(0).AutoFilterMode = FarPoint.Win.Spread.AutoFilterMode.EnhancedContextMenu
FpSpread1.Sheets(0).EnhancedFilterSortingMode = FarPoint.Win.Spread.EnhancedFilterSortingMode.Text