fpSpread1.ActiveSheet.AddRangeGroup(0, 10, true);
fpSpread1.ActiveSheet.RangeGroupBackGroundColor = Color.Yellow;
fpSpread1.ActiveSheet.RangeGroupButtonStyle = FarPoint.Win.Spread.RangeGroupButtonStyle.Enhanced;
FpSpread1.ActiveSheet.AddRangeGroup(0, 10, True)
FpSpread1.ActiveSheet.RangeGroupBackGroundColor = Color.Yellow
FpSpread1.ActiveSheet.RangeGroupButtonStyle = FarPoint.Win.Spread.RangeGroupButtonStyle.Enhanced