<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<a href="DowloadExcel.ashx">下载</a>
</div>
<div>
<a href="DowloadTableExcel.ashx">下载数据库文件</a>
</div>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string dataDir = AppDomain.CurrentDomain.BaseDirectory;
if (dataDir.EndsWith(@"\bin\Debug\")
|| dataDir.EndsWith(@"\bin\Release\"))
{
dataDir = System.IO.Directory.GetParent(dataDir).Parent.Parent.FullName;
AppDomain.CurrentDomain.SetData("DataDirectory", dataDir);
}
}
}
<%@ WebHandler Language="C#" Class="DowloadExcel" %>
using System;
using System.Web;
using NPOI.HSSF.UserModel;
public class DowloadExcel : IHttpHandler {
public void ProcessRequest (HttpContext context)
{
context.Response.ContentType = "application/x-excel";
string filename = HttpUtility.UrlEncode("动态数据.xls");
//神啊！调试了一个晚上才是这句话的错
context.Response.AddHeader("Content-Disposition", "attachment; fileName=" + filename);
//请注意，下面这句话是错误的
//context.Response.AddHeader("Content-Displsition", "attachment;filename=" + filename);
HSSFWorkbook workbook = new HSSFWorkbook(); //创建一个xls；
HSSFSheet sheet = workbook.CreateSheet(); //创建一个Sheet
HSSFRow row = sheet.CreateRow(0);
row.CreateCell(0, HSSFCell.CELL_TYPE_STRING).SetCellValue("hello");
workbook.Write(context.Response.OutputStream);
}
public bool IsReusable {
get {
return false;
}
}
}
<%@ WebHandler Language="C#" Class="DowloadTableExcel" %>
using System;
using System.Web;
using NPOI.HSSF.UserModel;
using System.Data.SqlClient;
public class DowloadTableExcel : IHttpHandler {
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "application/x-excel";
//context.Response.Write("Hello World");
string filename = HttpUtility.UrlEncode("用户表.xls");//url编码，防止乱码
context.Response.AddHeader("Content-Disposition", "attachment; fileName=" + filename);
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.CreateSheet();
using (SqlConnection conn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=E:\MyProjects\C#net传智播客\第十一节asp.net中级\导出Excel\App_Data\Database.mdf;Integrated Security=True;User Instance=True"))
{
conn.Open();
using (SqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = "select * FROM T_User";
using(SqlDataReader reader = cmd.ExecuteReader())
{
HSSFRow _row = sheet.CreateRow(0);
_row.CreateCell(0, HSSFCell.CELL_TYPE_STRING).SetCellValue("ID");
_row.CreateCell(1, HSSFCell.CELL_TYPE_STRING).SetCellValue("用户名");
_row.CreateCell(2, HSSFCell.CELL_TYPE_STRING).SetCellValue("性别");
int rownum = 1;
while (reader.Read())
{
Int64 id = reader.GetInt64(reader.GetOrdinal("id"));
string name = reader.GetString(reader.GetOrdinal("name"));
string sex = reader.GetString(reader.GetOrdinal("sex"));
HSSFRow row = sheet.CreateRow(rownum);
row.CreateCell(0, HSSFCell.CELL_TYPE_STRING).SetCellValue(id);
row.CreateCell(1, HSSFCell.CELL_TYPE_STRING).SetCellValue(name);
row.CreateCell(2, HSSFCell.CELL_TYPE_STRING).SetCellValue(sex);
rownum++;
//context.Response.Write("id:"+id+", name:"+name+", sex="+sex+"<BR>");
}
}
}
}
workbook.Write(context.Response.OutputStream);
}
public bool IsReusable {
get {
return false;
}
}
}