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。