protected void Page_Load(object sender, EventArgs e)
{
if (this.IsPostBack) return;
FpSpread1.Sheets[0].Cells[0, 1].Value = 30;
FpSpread1.Sheets[0].Cells[1, 1].Value = 15;
FpSpread1.Sheets[0].Cells[2, 1].Value = 10;
FarPoint.Web.Spread.Top10FilterItem top10filter = new FarPoint.Web.Spread.Top10FilterItem(true, 5, false);
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);
top10filter.DisplayAtTopOfList = true;
fd.Filters.Add(top10filter);
rowFilter.ColumnDefinitions.Add(fd);
FpSpread1.ActiveSheetView.RowFilter = rowFilter;
FpSpread1.ActiveSheetView.AutoFilterColumn(1, top10filter.DisplayName);
FpSpread1.ActiveSheetView.AutoFilterMode = FarPoint.Web.Spread.AutoFilterMode.Enhanced;
ListBox1.Items.Add(top10filter.DisplayName.ToString());
}