1.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="MultipleFileDownLoadSample._Default" %>        
      
    
       
    
            
        
            
                    
                         
                              
            
             
                           
                          
                              
            
             
                           
                      
                 
            
       
    
      

2.aspx.cs

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.IO;using ICSharpCode.SharpZipLib.Zip;namespace MultipleFileDownLoadSample{    public partial class _Default : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {            if (!IsPostBack) {                DataBind();            }        }        public override void DataBind()        {            //读取images目录下面的文件列表，绑定到GridView上面            var query = from item in Directory.GetFiles(Server.MapPath("~/images"))                        select new                        {                            FileName = Path.GetFileName(item)                        };            gv.DataSource = query;            gv.DataBind();        }        private void Download(IEnumerable
      
        files,string zipFileName ){            //根据所选文件打包下载            MemoryStream ms = new MemoryStream();            byte[] buffer = null;            using (ZipFile file = ZipFile.Create(ms))            {                file.BeginUpdate();                file.NameTransform = new MyNameTransfom();//通过这个名称格式化器，可以将里面的文件名进行一些处理。默认情况下，会自动根据文件的路径在zip中创建有关的文件夹。                foreach (var item in files)                {                    file.Add(Server.MapPath(string.Format("~/images/{0}",item)));                }                try                {                    file.CommitUpdate();                }                catch(Exception ex)                {                    throw new Exception(ex.Message);                }                               buffer = new byte[ms.Length];                ms.Position = 0;                ms.Read(buffer, 0, buffer.Length);            }            Response.AddHeader("content-disposition", "attachment;filename="+zipFileName);            Response.BinaryWrite(buffer);            Response.Flush();            Response.End();        }        protected void btDownload_Click(object sender, EventArgs e)        {            //var urls1 = "upload/file/82cbf858-92d9-4a82-95f7-7c9ba75004c7.jpg;upload/file/0df0dd6c-7d10-43ac-b583-e0a67eea9ba0.jpg;upload/file/d83d903f-4850-4607-a65d-4ac1a96d3791.jpg;upload/file/f0b23b86-4461-4ebd-8afe-eced6784a8dc.jpg;upload/file/c4062bd1-56cd-4801-b5f1-aa29f7b0cd44.jpg;upload/file/eb5bd59d-adee-4ac0-8ae7-706a9d8df0fc.pdf;upload/file/46ef5099-9480-4c47-9a09-8e585a7d97ff.txt;upload/file/7a20cd9e-c0a4-4fd6-9998-40d4d6d835fb.txt;upload/file/37842f30-aa10-4433-a641-55010c8a0efc.doc;upload/file/e8575946-9f09-4aed-b9dd-a4f0d3f617e0.png;upload/file/745f8304-8175-4e6c-9200-f5c3c95dcbd8.doc;upload/file/9372ba27-c05b-4873-91a0-3d3e5ffff9b6.xls;upload/file/160f5052-86e7-400e-aa13-7427af409f3d.txt;upload/file/8fcd56ee-e06b-46b4-b100-52f4349688b1.txt;upload/file/f11e433e-fad7-4b61-8a0e-a5bd7650ce4c.txt;upload/file/4410e83d-cc6f-4d24-91af-a117979f6bc0.jpg;upload/file/3bf0b545-38c0-4e24-a8a6-25dc5ea97eea.jpg;upload/file/22e3ea67-fcad-4d58-b39e-048661608ae8.jpg;upload/file/cc6162ca-8640-4f26-ad39-71ec1b287eae.txt;upload/file/cfcd3c53-ff84-4a54-bf3c-85dd5b3e8e6d.pdf;upload/file/668404f7-e808-4d3a-8818-d01fbba1f42f.pdf;upload/file/59f8d59d-4d3b-4262-83ab-bd18d5f345e3.pdf;upload/file/9da50650-daff-40b3-b9c9-4067b3f565bd.jpg;upload/file/1a3150a3-eecb-48c1-aabb-e5d4f6847ca4.jpg;upload/file/dfe943ed-6432-424e-a881-70442dc833de.jpg;upload/file/4a2005a1-f68f-4289-979a-b7d936383a7c.jpg;upload/file/9a208b9e-2591-45bd-800a-1d67ef974cce.jpg;upload/file/f00b9046-7f4a-4154-af71-662ff7b5ec3e.jpg;upload/file/57c03a84-02bc-43f9-8f8a-d158ad67c9cf.doc;upload/file/3761e5a4-4238-4234-8ea5-c3d90987ae3c.xls;upload/file/5c8a60f4-ac9e-4b65-9f26-3d7073ff9762.txt;upload/file/add4390c-ed11-40b4-a599-9553a308ee02.txt;upload/file/cb790b7b-2c50-48f6-b82c-eda06c6b2fc4.txt;upload/file/c3ccfef9-4a76-4767-9ad3-e197c2667d0c.txt;upload/file/048066be-081e-4bf8-be24-abca2ee560c0.xls;upload/file/506f7f11-dd40-4838-b1cf-af4382f6b8d6.jpg;upload/file/4201a8b1-96f1-4312-9736-0eb682263b90.jpg;upload/file/be2963b7-66bc-4f5f-bb42-886ec08c11ab.txt;upload/file/4f455ab5-42f8-4a01-b21c-1627aff73706.jpg;";            //var urls = urls1.TrimEnd(';');            //根据复选框的选中状态，将多个文件打包下载            List
       
         files = new List
        
         ();            //string[] urlstrs = urls.Split(';');            //foreach (var a in urlstrs)            //{            //    files.Add(a);            //}            foreach (GridViewRow item in gv.Rows)            {                var chk = item.FindControl("chk") as CheckBox;                if (chk.Checked)                {                    var label = item.FindControl("file") as Label;                    files.Add(label.Text);                }            }            Download(files, "Test.zip");        }    }    public class MyNameTransfom : ICSharpCode.SharpZipLib.Core.INameTransform    {        #region INameTransform 成员        public string TransformDirectory(string name)        {            return null;        }        public string TransformFile(string name)        {            return Path.GetFileName(name);        }        #endregion    }}