FarPoint.Web.Spread.NamedStyle instyle = new FarPoint.Web.Spread.NamedStyle();
FarPoint.Web.Spread.NamedStyle outstyle = new FarPoint.Web.Spread.NamedStyle();
instyle.BackColor = Color.Yellow;
outstyle.BackColor = Color.Gray;
FarPoint.Web.Spread.StyleRowFilter rf = new FarPoint.Web.Spread.StyleRowFilter(FpSpread1.Sheets[0], instyle, outstyle);
FpSpread1.Sheets[0].RowFilter = rf;
// Assign filter and customize filter options
FpSpread1.Sheets[0].RowFilter.AddColumn(1);
FpSpread1.Sheets[0].RowFilter.ShowFilterIndicator = true;
FpSpread1.Sheets[0].RowFilter.AllString = "Show All";
FpSpread1.Sheets[0].RowFilter.BlanksString = "Show The Blanks";
FpSpread1.Sheets[0].RowFilter.NonBlanksString = "Show The Non-Blanks";