运用NPOI操作EXCEL

一、引入NPOI程序集

下载地址：http://pan.baidu.com/s/1qWI3Vgo

 

二、运用NPOI导出成excel文件

 1  protected void btnOutExcel_Click(object sender, EventArgs e)

 2         {

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

 4             ISheet sheet1 = workbook.CreateSheet("学员信息页");//创建一个sheet页

 5             IRow rowHeader = sheet1.CreateRow(0);//创建第一行

 6             //设置表头内容

 7             rowHeader.CreateCell(0, CellType.STRING).SetCellValue("ID");//创建第一行第一列的单元格，设定里面的值为ID

 8             rowHeader.CreateCell(1, CellType.STRING).SetCellValue("姓名");

 9             rowHeader.CreateCell(2, CellType.STRING).SetCellValue("用户名");

10             rowHeader.CreateCell(3, CellType.STRING).SetCellValue("手机号");

11             rowHeader.CreateCell(4, CellType.STRING).SetCellValue("班级");

12             rowHeader.CreateCell(5, CellType.STRING).SetCellValue("创建时间");

13             //设置数据内容

14             OpenDB();

15             string strSql = "select UserId,RealName,UserName,PhoneNum,Phase,CreatedTime from UserInfor";

16             using (cmd = new SqlCommand(strSql, con))

17             {

18                 using (read = cmd.ExecuteReader())

19                 {

20                     int i = 0;

21                     while (read.Read())

22                     {

23                         i++;

24                         IRow rowData = sheet1.CreateRow(i);

25                         rowData.CreateCell(0, CellType.STRING).SetCellValue(read["UserId"].ToString());//创建第一行第一列的单元格，设定里面的值为ID

26                         rowData.CreateCell(1, CellType.STRING).SetCellValue(read["RealName"].ToString());

27                         rowData.CreateCell(2, CellType.STRING).SetCellValue(read["UserName"].ToString());

28                         rowData.CreateCell(3, CellType.STRING).SetCellValue(read["PhoneNum"].ToString());

29                         rowData.CreateCell(4, CellType.STRING).SetCellValue(read["Phase"].ToString());

30 

31                         ICellStyle styledate = workbook.CreateCellStyle();

32                         IDataFormat format = workbook.CreateDataFormat();

33                         styledate.DataFormat = format.GetFormat("yyyy\"年\"m\"月\"d\"日\"");

34                         ICell cellInDate = rowData.CreateCell(5, CellType.NUMERIC);

35                         cellInDate.CellStyle = styledate;

36                         cellInDate.SetCellValue(read["CreatedTime"].ToString());

37                     }

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

39                     {

40                         workbook.Write(stream);

41                     }

42                 }

43             }

44         }

View Code

三、从excel文件里面导出数据

 1 protected void btnFromExcel_Click(object sender, EventArgs e)

 2         {

 3             StringBuilder sb = new StringBuilder();

 4             sb.Append("<table>");

 5             sb.Append("<tr><th>ID</th><th>姓名</th><th>用户名</th><th>手机号</th><th>班级</th><th>创建时间</th></tr>");

 6             using (Stream stream = File.OpenRead("e:/1.xls"))

 7             {

 8                 HSSFWorkbook workbook = new HSSFWorkbook(stream);

 9                 int j = workbook.GetSheetAt(0).LastRowNum;

10                 for (int row = 1; row <= j; row++)

11                 {

12                     sb.Append("<tr>");

13                     sb.Append(string.Format("<td>{0}</td><td>{1}</td><td>{2}</td><td>{3}</td><td>{4}</td><td>{5}</td>", workbook.GetSheetAt(0).GetRow(row).GetCell(0).StringCellValue, workbook.GetSheetAt(0).GetRow(row).GetCell(1).StringCellValue, workbook.GetSheetAt(0).GetRow(row).GetCell(2).StringCellValue, workbook.GetSheetAt(0).GetRow(row).GetCell(3).StringCellValue, workbook.GetSheetAt(0).GetRow(row).GetCell(4).StringCellValue, workbook.GetSheetAt(0).GetRow(row).GetCell(5).StringCellValue));

14                     sb.Append("</tr>");

15                 }

16             }

17             sb.Append("<table>");

18             Response.Write(sb.ToString());

19         }

View Code

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