FarPoint.Win.Spread.CellType.ComboBoxCellType cmbocell = new FarPoint.Win.Spread.CellType.ComboBoxCellType();
cmbocell.Items = (new String[] { "January", "February", "March", "April", "May", "June" });
cmbocell.DropDownOptions = FarPoint.Win.DropDownOptions.ButtonAndText;
fpSpread1.Sheets[0].Cells[0, 0].CellType = cmbocell;
Dim cmbocell As New FarPoint.Win.Spread.CellType.ComboBoxCellType()
cmbocell.Items = (new String() {"January", "February", "March", "April", "May", "June"})
cmbocell.DropDownOptions = FarPoint.Win.DropDownOptions.ButtonAndText
FpSpread1.Sheets(0).Cells(0,0).CellType = cmbocell