using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Text;

 using NPOI.HSSF.UserModel;

 using NPOI.SS.UserModel;

 using System.IO;

 namespace ConsoleApplication1

 {

     class Program

     {

         static void Main(string[] args)

         {

             HSSFWorkbook hssfworkbook = new HSSFWorkbook();//创建一个工作薄

             ISheet sheet1 = hssfworkbook.CreateSheet("第一页");//页

             IRow rowHeader = sheet1.CreateRow();//第几行

             rowHeader.CreateCell(, CellType.STRING).SetCellValue("测试测试");//第0行第0列中的数据

             using (Stream stream = File.OpenWrite("F:/1.xls"))

             {

                 hssfworkbook.Write(stream);//将数据写入到工作薄中

             }

         }

     }

 }