第十一节 导出Excel 

<%@ 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;
        }
    }

}

　　

posted @ 2012-03-19 23:11  简单--生活  阅读(451)  评论(0)    收藏  举报
简单--生活(CSDN)