protected void Page_Load(object sender, System.EventArgs e)
{
if (this.IsPostBack) return;
FpSpread1.Sheets[0].RowCount = 5;
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.Web.Spread.IconSetConditionalFormattingRule c = new FarPoint.Web.Spread.IconSetConditionalFormattingRule(FarPoint.Web.Spread.ConditionalFormattingIconSetStyle.ThreeTriangles);
c.IconRuleSet.Add(new FarPoint.Web.Spread.ConditionalFormattingIconValue(10, FarPoint.Web.Spread.ConditionalFormattingValueType.Number, true, FarPoint.Web.Spread.ConditionalFormattingIcon.BlackCircle));
FarPoint.Web.Spread.ConditionalFormatting IconSetCF = new FarPoint.Web.Spread.ConditionalFormatting(new FarPoint.Web.Spread.Model.CellRange(0, 0, 2, 2), c);
FpSpread1.Sheets[0].ConditionalFormatting.Add(IconSetCF);
FarPoint.Web.Spread.IconFilterItem iconfilter = new FarPoint.Web.Spread.IconFilterItem(FarPoint.Web.Spread.ConditionalFormattingIcon.BlackCircle);
FarPoint.Web.Spread.IRowFilter rowFilter = new FarPoint.Web.Spread.HideRowFilter(FpSpread1.ActiveSheetView);
FarPoint.Web.Spread.FilterColumnDefinition fd = new FarPoint.Web.Spread.FilterColumnDefinition(1, FarPoint.Web.Spread.FilterListBehavior.Custom);
fd.Filters.Add(iconfilter);
rowFilter.ColumnDefinitions.Add(fd);
FpSpread1.ActiveSheetView.RowFilter = rowFilter;
FpSpread1.ActiveSheetView.AutoFilterColumn(1, iconfilter.DisplayName);
FpSpread1.ActiveSheetView.AutoFilterMode = FarPoint.Web.Spread.AutoFilterMode.Enhanced;
}

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If (IsPostBack) Then
    Return
End If
FpSpread1.Sheets(0).RowCount = 5
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
Dim c As New FarPoint.Web.Spread.IconSetConditionalFormattingRule(FarPoint.Web.Spread.ConditionalFormattingIconSetStyle.ThreeTriangles)
c.IconRuleSet.Add(New FarPoint.Web.Spread.ConditionalFormattingIconValue(10, FarPoint.Web.Spread.ConditionalFormattingValueType.Number, True, FarPoint.Web.Spread.ConditionalFormattingIcon.BlackCircle))
Dim IconSetCF As New FarPoint.Web.Spread.ConditionalFormatting(New FarPoint.Web.Spread.Model.CellRange(0, 0, 2, 2), c)
FpSpread1.Sheets(0).ConditionalFormatting.Add(IconSetCF)
Dim iconfilter As New FarPoint.Web.Spread.IconFilterItem(FarPoint.Web.Spread.ConditionalFormattingIcon.BlackCircle)
Dim rowFilter As New FarPoint.Web.Spread.HideRowFilter(FpSpread1.ActiveSheetView)
Dim fd As New FarPoint.Web.Spread.FilterColumnDefinition(1, FarPoint.Web.Spread.FilterListBehavior.Custom)
fd.Filters.Add(iconfilter)
rowFilter.ColumnDefinitions.Add(fd)
FpSpread1.ActiveSheetView.RowFilter = rowFilter
FpSpread1.ActiveSheetView.AutoFilterColumn(1, iconfilter.DisplayName)
FpSpread1.ActiveSheetView.AutoFilterMode = FarPoint.Web.Spread.AutoFilterMode.Enhanced
End Sub