FarPoint.Win.Spread.CellType.FilterBarCellType fbcell = new FarPoint.Win.Spread.CellType.FilterBarCellType();
fbcell.AutoFormat = true;
fbcell.ContextMenuType = FarPoint.Win.Spread.CellType.FilterBarContextMenuType.DateTime;
fpSpread1.Sheets[0].AutoFilterMode = FarPoint.Win.Spread.AutoFilterMode.FilterBar;
fpSpread1.Sheets[0].FilterBar.Cells[0].CellType = fbcell;
fpSpread1.Sheets[0].FilterBar.Cells[0].BackColor = Color.Aqua;
fpSpread1.Sheets[0].FilterBar.Cells[0].ForeColor = Color.Black;
fpSpread1.Sheets[0].Cells[0, 0].Value = DateTime.Now;