NPOI 生成Excel 的——常用
把自己常用的整理了出来，(*^__^*) 嘻嘻……
有关文件输出文件名乱码的问题
有设置Excel中的一些样式问题
有直接保存Excel的
更多NPOI的实例说明：http://www.cnblogs.com/tonyqus/archive/2009/04/12/1434209.html 这个可是别个大虾滴。
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.IO;
using NPOI.SS.UserModel;
using NPOI.HSSF.UserModel;
using NPOI.HSSF.Util;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
DownLoadExcel();
}
/// <summary>
/// 下载Excel
/// </summary>
public void DownLoadExcel()
{
/*
* ①：输出文档
*/
string fileName = DateTime.Now.ToString("yyyyMMdd") + "测试.xls";
string UserAgent = Request.ServerVariables["http_user_agent"].ToLower();
// Firfox和IE下输出中文名显示正常
if (UserAgent.IndexOf("firefox") == -1)
{
fileName = HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8);
}
Response.ContentType = "application/vnd.ms-excel;charset=UTF-8";
Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", fileName));
Response.Clear();
//写入内容到Excel
HSSFWorkbook hssfworkbook = writeToExcel();
//将Excel内容写入到流中
MemoryStream file = new MemoryStream();
hssfworkbook.Write(file);
//输出
Response.BinaryWrite(file.GetBuffer());
Response.End();
/*
* ②：将文档保存到指定路径
*/
string destFileName = @"D:\test.xls";
HSSFWorkbook hssfworkbook2 = writeToExcel();
MemoryStream msfile = new MemoryStream();
hssfworkbook.Write(msfile);
System.IO.File.WriteAllBytes(destFileName, msfile.ToArray());
}
/// <summary>
/// 写入内容到Excel中
/// </summary>
/// <returns></returns>
private HSSFWorkbook writeToExcel()
{
//string template = "模板路径.xls";
//FileStream file = new FileStream(template, FileMode.Open, FileAccess.Read);
//HSSFWorkbook hssfworkbook = new HSSFWorkbook(file);// 创建对象
//HSSFSheet excelSheet = (HSSFSheet)hssfworkbook.GetSheetAt(0);// 获得sheet
HSSFWorkbook hssfworkbook = new HSSFWorkbook();
HSSFSheet excelSheet = (HSSFSheet)hssfworkbook.CreateSheet("sheet1");
Row row0 = excelSheet.CreateRow(0);
Cell cell0 = CreateCell(0, row0);
cell0.SetCellValue("NUM");
cell0.CellStyle = GetCellStyle(hssfworkbook, CellBorderType.THIN, CellBorderType.THIN, CellBorderType.THIN, CellBorderType.THIN, HSSFColor.LIGHT_YELLOW.index, "#,##0");
for (int i = 100, j = 1; i < 10000; i++, j++)
{
Row row = CreateRow(j, excelSheet);
Cell cell = CreateCell(0, row);
cell.SetCellValue(i);
cell.CellStyle = GetCellStyle(hssfworkbook, CellBorderType.THIN, CellBorderType.THIN, CellBorderType.THIN, CellBorderType.THIN, HSSFColor.LIGHT_GREEN.index, "#,##0");
}
return hssfworkbook;
}
/// <summary>
/// 设置样式
/// </summary>
/// <param name="hssfworkbook"></param>
/// <param name="borderLeft">左边框</param>
/// <param name="borderBottom">下边框</param>
/// <param name="borderRight">右边框</param>
/// <param name="borderTop">上边框</param>
/// <param name="fillforgeroundColor">背景填充色</param>
/// <param name="dataFormat">数据格式</param>
/// <returns></returns>
private CellStyle GetCellStyle(HSSFWorkbook hssfworkbook
, CellBorderType borderLeft, CellBorderType borderBottom, CellBorderType borderRight, CellBorderType borderTop
, short fillforgeroundColor
, string dataFormat)
{
CellStyle styleInfo = hssfworkbook.CreateCellStyle();
styleInfo.BorderLeft = borderLeft;
styleInfo.BorderBottom = borderBottom;
styleInfo.BorderRight = borderRight;
styleInfo.BorderTop = borderTop;
styleInfo.Alignment = HorizontalAlignment.CENTER;
styleInfo.VerticalAlignment = VerticalAlignment.CENTER;
styleInfo.FillForegroundColor = fillforgeroundColor;//设置填充色
styleInfo.FillPattern = FillPatternType.SOLID_FOREGROUND;//设置填充色的时候必须设置这个
styleInfo.DataFormat = HSSFDataFormat.GetBuiltinFormat(dataFormat);
// 当前日期格式的需要以下这样设置
//HSSFDataFormat format = (HSSFDataFormat)hssfworkbook.CreateDataFormat();
//styleInfo.DataFormat = format.GetFormat("yyyy年m月d日");
return styleInfo;
}
/// <summary>
/// 创建行对象
/// </summary>
/// <param name="rowID"></param>
/// <param name="excelSheet"></param>
/// <returns></returns>
private Row CreateRow(int rowID, HSSFSheet excelSheet)
{
Row row = excelSheet.GetRow(rowID);
if (row == null)
{
row = excelSheet.CreateRow(rowID);
}
return row;
}
/// <summary>
/// 创建列对象
/// </summary>
/// <param name="rowID"></param>
/// <param name="excelSheet"></param>
/// <returns></returns>
private Cell CreateCell(int cellID, Row row)
{
Cell cell = row.GetCell(cellID);
if (cell == null)
{
cell = row.CreateCell(cellID);
}
return cell;
}
}
最近被Excel的給整疯了。
整理一下，希望可以给人帮助！
原文：http://blog.csdn.net/tianyitianyi1/article/details/7844873