当前位置：Gxlcms > 数据库问题 > WEB版利用NPOI导出数据库数据为Excel文件

WEB版利用NPOI导出数据库数据为Excel文件

时间：2021-07-01 10:21:17 帮助过：29人阅读

C#" AutoEventWireup="true" CodeFile="导出到Excel.aspx.cs" Inherits="导出到Excel" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" /> </div> </form> </body> </html>

后台代码

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using NPOI;
using NPOI.SS.UserModel;
using System.IO;
public partial class 导出到Excel : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {

        DataTable dt =//利用你的orm框架得到数据源DataTable
        if (dt.Rows.Count > 0)
        {
            //创建工作簿
            NPOI.SS.UserModel.IWorkbook workbook = new NPOI.HSSF.UserModel.HSSFWorkbook();
            //创建表
            ISheet sheet = workbook.CreateSheet("vinkong");//表名
            IRow row0 = sheet.CreateRow(0);
            row0.CreateCell(0).SetCellValue("id信息");
            row0.CreateCell(1).SetCellValue("名称信息");
            row0.CreateCell(2).SetCellValue("备注信息");
            for (int r = 0; r < dt.Rows.Count; r++)
            {
                //创建行接受DataTable的行数据
                IRow row = sheet.CreateRow(r + 1);
                row.CreateCell(0).SetCellValue(dt.Rows[r]["ID"].ToString());
                row.CreateCell(1).SetCellValue(dt.Rows[r]["Code"].ToString());
                row.CreateCell(2).SetCellValue(dt.Rows[r]["Name"].ToString());

            }
            string filePath = Server.MapPath(@"./Files/vinkong" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls");//存到项目Files文件夹下

            //写文件
            FileStream file = new FileStream(filePath, FileMode.Create);
            workbook.Write(file);
            file.Close();


            //下载
            FileInfo fileInfo = new FileInfo(filePath);
            Response.Clear();
            Response.ClearContent();
            Response.ClearHeaders();
            Response.AddHeader("Content-Disposition", "attachment;filename=" + fileInfo.Name);
            Response.AddHeader("Content-Length", fileInfo.Length.ToString());
            Response.AddHeader("Content-Transfer-Encoding", "binary");
            Response.ContentType = "application/octet-stream";
            Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
            Response.WriteFile(fileInfo.FullName);
            Response.Flush();
            //删除文件
            System.IO.File.Delete(filePath);

            Response.End();
        }
        else
        {
            Response.Write("<script>alert(‘导出失败！‘)</script>");
        }
    }
}

标签：data 导出数据 linq eric add oct model str get

WEB版利用NPOI导出数据库数据为Excel文件

人气教程排行