fpSpread1.Sheets[0].Cells[0, 1].Value = 3;
fpSpread1.Sheets[0].Cells[1, 1].Value = 2;
fpSpread1.Sheets[0].Cells[2, 1].Value = 10;
fpSpread1.Sheets[0].Cells[3, 1].Value = 1;
FarPoint.Win.Spread.IconSetConditionalFormattingRule c = new FarPoint.Win.Spread.IconSetConditionalFormattingRule(FarPoint.Win.Spread.ConditionalFormattingIconSetStyle.ThreeTriangles);
c.IconRuleSet.Add(new FarPoint.Win.Spread.ConditionalFormattingIconValue(10, FarPoint.Win.Spread.ConditionalFormattingValueType.Number, true, FarPoint.Win.Spread.ConditionalFormattingIcon.BlackCircle));
FarPoint.Win.Spread.ConditionalFormatting IconSetCF = new FarPoint.Win.Spread.ConditionalFormatting(new FarPoint.Win.Spread.Model.CellRange(0, 0, 2, 2), c);
fpSpread1.Sheets[0].Models.ConditionalFormatting.Add(IconSetCF);
FarPoint.Win.Spread.IconFilterItem iconfilter = new FarPoint.Win.Spread.IconFilterItem(FarPoint.Win.Spread.ConditionalFormattingIcon.BlackCircle);
FarPoint.Win.Spread.IRowFilter rowFilter = new FarPoint.Win.Spread.HideRowFilter(fpSpread1.ActiveSheet);
FarPoint.Win.Spread.FilterColumnDefinition fd = new FarPoint.Win.Spread.FilterColumnDefinition(1, FarPoint.Win.Spread.FilterListBehavior.Custom);
fd.Filters.Add(iconfilter);
rowFilter.ColumnDefinitions.Add(fd);
fpSpread1.ActiveSheet.RowFilter = rowFilter;
fpSpread1.ActiveSheet.AutoFilterColumn(1, iconfilter.DisplayName, 0);
fpSpread1.ActiveSheet.AutoFilterMode = FarPoint.Win.Spread.AutoFilterMode.EnhancedContextMenu;