daochu

 public ActionResult daochu()
        {
            HSSFWorkbook book = new HSSFWorkbook();
            ISheet sheet = book.CreateSheet("sheet1");
            IRow rows = sheet.CreateRow(0);
            rows.CreateCell(0).SetCellValue("编号");
            rows.CreateCell(1).SetCellValue("姓名");
            rows.CreateCell(2).SetCellValue("类");
     
            var data = new BLL.sBLL().getss();
            for (int i = 0; i < data.Rows.Count; i++)
            {
                IRow row1 = sheet.CreateRow(i+1);
                row1.CreateCell(0).SetCellValue(data.Rows[i]["ID"].ToString());
                row1.CreateCell(1).SetCellValue(data.Rows[i]["Name"].ToString());
                row1.CreateCell(2).SetCellValue(data.Rows[i]["AradeNo"].ToString());
            
            }
            MemoryStream sm = new MemoryStream();
            book.Write(sm);
            sm.Seek(0,SeekOrigin.Begin);
            return File(sm,"application/ved-excel","biaodan.xls");
        }