asp.net 通过 Handler 导出数据至excel (让用户下载)
效果图：
代码：
Export2Excel.ashx
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.SessionState;using System.IO;using System.Data;namespace BLIC.SecurityCodeValidate.Web.Handler{ /// <summary> /// AdminLogin 的摘要说明 /// </summary> public class Export2Excel : IHttpHandler, IRequiresSessionState { public void ProcessRequest(HttpContext context) { try { test1(context); } catch (Exception ex) { } //try //{ // test1(context); //} //catch (Exception ex) //{ // //context.Response.ContentType = "text/plain"; // context.Response.Write("导出失败：" + ex.Message); //} } public bool IsReusable { get { return false; } } private void test1(HttpContext context) { HttpResponse resp = System.Web.HttpContext.Current.Response; resp.Charset = "utf-8"; resp.Clear(); string filename = "统计贴标报表_" + DateTime.Now.ToString("yyyyMMddHHmmss"); resp.AppendHeader("Content-Disposition", "attachment;filename=" + filename + ".xls"); resp.ContentEncoding = System.Text.Encoding.UTF8; resp.ContentType = "application/ms-excel"; string style = "<meta http-equiv=\"content-type\" content=\"application/ms-excel; charset=utf-8\"/>" + "<style> .table{ font: 9pt Tahoma, Verdana; color: #000000; text-align:center; background-color:#8ECBE8; }.table td{text-align:center;height:21px;background-color:#EFF6FF;}.table th{ font: 9pt Tahoma, Verdana; color: #000000; font-weight: bold; background-color: #8ECBEA; height:25px; text-align:center; padding-left:10px;}</style>"; resp.Write(style); resp.Write("<table class='table'><tr><th>姓名</th><th>出生年月</th><th>籍贯</th><th>毕业时间</th></tr>"); System.Data.DataTable dtSource = new System.Data.DataTable(); dtSource.TableName = "statistic"; dtSource.Columns.Add("第一列"); dtSource.Columns.Add("第二列"); dtSource.Columns.Add("第三列"); dtSource.Columns.Add("第四列"); System.Data.DataRow row = null; row = dtSource.NewRow(); row[0] = "张三"; row[1] = "1987-09-09"; row[2] = "河北保定"; row[3] = "2008年毕业"; dtSource.Rows.Add(row); row = dtSource.NewRow(); row[0] = "李四"; row[1] = "1987-09-02"; row[2] = "湖北武汉"; row[3] = "2009年毕业"; dtSource.Rows.Add(row); row = dtSource.NewRow(); row[0] = "王五"; row[1] = "1987-09-01"; row[2] = "湖南湘潭"; row[3] = "2013年毕业"; dtSource.Rows.Add(row); foreach (DataRow tmpRow in dtSource.Rows) { resp.Write("<tr><td>" + tmpRow[0] + "</td>"); resp.Write("<td>" + tmpRow[1] + "</td>"); resp.Write("<td>" + tmpRow[2] + "</td>"); resp.Write("<td>" + tmpRow[3] + "</td>"); resp.Write("</tr>"); } resp.Write("<table>"); resp.Flush(); resp.End(); } }}