FarPoint.Web.Spread.Extender.MaskedEditCellType m = new FarPoint.Web.Spread.Extender.MaskedEditCellType();
m.ShowEditor = true;
m.MaskType = AjaxControlToolkit.MaskedEditType.Number;
m.Mask = "9,999";
FarPoint.Web.Spread.Extender.MaskedEditValidator mv = new FarPoint.Web.Spread.Extender.MaskedEditValidator();
mv.MaximumValue = "999";
mv.MinimumValue = "100";
mv.InvalidValueMessage = "Type a number.";
m.MaskedEditValidator = mv;
FpSpread1.Sheets[0].Cells[0, 0].CellType = m;
FarPoint.Web.Spread.Extender.DateCalendarCellType dc = new FarPoint.Web.Spread.Extender.DateCalendarCellType();
dc.DateFormat = "yyyy/MM/dd";
AjaxControlToolkit.MaskedEditExtender mee = new AjaxControlToolkit.MaskedEditExtender();
mee.Mask = "9999/99/99";
mee.MaskType = AjaxControlToolkit.MaskedEditType.Date;
mee.ErrorTooltipEnabled = true;
//Add Extender to CellType
dc.Extenders.Add(mee);
dc.ShowEditor = true;
//Configure validator
FarPoint.Web.Spread.Extender.MaskedEditValidator mv1 = new FarPoint.Web.Spread.Extender.MaskedEditValidator();
mv1.MaximumValue = "2010/12/31";
mv1.MinimumValue = "2000/01/01";
mv1.InvalidValueMessage = "Please type a date.";
//Set Validator
dc.MaskedEditValidator = mv1;
FpSpread1.Sheets[0].Cells[1, 0].CellType = dc;