利用repeater绑定下载地址并点击下载(避免中文文件名乱码)

aspx       

             <asp:repeater id="repeater1" runat="server">

                        <headertemplate>

                            <table>

                                <tr>

                        </headertemplate>

                        <itemtemplate>

                            <tr>

                                <td style="border: 0px;">

                                    <a href='../download.ashx?url=<%# server.urlencode(eval

                                    ("filepath").tostring())%>'>

                                     <%#eval_r("filename")%></a>

                                </td>

                        </itemtemplate>

                        <footertemplate>

                            </tr></table></footertemplate>

                    </asp:repeater>

download.ashx

using system;

using system.collections;

using system.data;

using system.linq;

using system.web;

using system.web.services;

using system.web.services.protocols;

using system.xml.linq;

namespace web.ucenter

{

    /// <summary>

    /// $codebehindclassname$ 的摘要说明

    /// </summary>

    [webservice(namespace = "http://tempuri.org/")]

    [webservicebinding(conformsto = wsiprofiles.basicprofile1_1)]

    public class download : ihttphandler

    {

        public void processrequest(httpcontext context)

        {

            try

            {

                string path = context.request.querystring["url"].tostring();

                system.io.fileinfo file = new system.io.fileinfo(path);

                context.response.clear();

                context.response.charset = "gb2312";

                context.response.contentencoding = system.text.encoding.utf8;

                // 添加头信息，为"文件下载/另存为"对话框指定默认文件名

                context.response.addheader

                    ("content-disposition",

                    "attachment; filename="

                    +

                   system.web.httputility.urlencode

                (file.name,system.text.encoding.utf8));// 防止中文名有乱码

                // 添加头信息，指定文件大小，让浏览器能够显示下载进度

                context.response.addheader("content-length", file.length.tostring());

                //// 指定返回的是一个不能被客户端读取的流，必须被下载

                //context.response.contenttype = "application/ms-excel";

                // 把文件流发送到客户端

                context.response.writefile(file.fullname);

                // 停止页面的执行

                context.response.end();

            }

            catch

                context.response.write("您下载的资源不存在！");

        }

        public bool isreusable

            get

                return false;

    }

}

注意点：我在数据库存储的文件路径是加server.map的绝对路径。实际下载的时候根据实际情况修改代码。