npoi设置数据有效性

npoi设置数据有效性

    public void SetDataValidate(ISheet sheet, int firstCol, int lastCol)
    {
        CellRangeAddressList regions = new CellRangeAddressList(1, 65535, firstCol, lastCol);
        DVConstraint constraint = DVConstraint.CreateDateConstraint(
            (int)ComparisonOperator.Between, "1900-01-01", "2999-12-31", "yyyy-MM-dd");
        HSSFDataValidation dataValidate = new HSSFDataValidation(regions, constraint);
        dataValidate.EmptyCellAllowed = false;
        dataValidate.CreateErrorBox("错误提示", "请输入日期'yyyy年MM月dd日'");

        sheet.AddValidationData(dataValidate);
    }