using System;using System.Collections.Generic;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.IO;using System.Drawing;using System.Drawing.Imaging;using System.Drawing.Drawing2D;using Microsoft.Win32;using System.Diagnostics;using ICSharpCode.SharpZipLib.Zip;public partial class _Default : System.Web.UI.Page{    protected void Page_Load(object sender, EventArgs e)    {        if (!IsPostBack)        {        }    } protected void btnSave_Click(object sender, EventArgs e)    {        string str = "1.jpg|2.jpg|3.jpg";//文件名      string saveName = "test";//保存的文件名        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。            string[] s = str.Split('|');            foreach (string item in s)            {                file.Add(Server.MapPath("~/newImages/" + item + ""));            }            file.CommitUpdate();            buffer = new byte[ms.Length];            ms.Position = 0;            ms.Read(buffer, 0, buffer.Length);        }

                  //判断如果是火狐浏览器则不进行UTF-8编码

                   System.Web.HttpBrowserCapabilities browser = Request.Browser;

              if (browser.Browser=="Firefox")

                 {

                     Response.AddHeader("content-disposition", "attachment;filename=" + saveName + ".zip");

                 }

              else{

                 //IE和其它浏览器都要进行UTF-8编码，中文不编码会出现乱码

                    Response.AddHeader("content-disposition", "attachment;filename=" +  HttpUtility.UrlEncode(saveName) + ".zip");

                  }

Response.BinaryWrite(buffer);        Response.Flush();        Response.End();     } 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    } }

注：需要下载一个 ICSharpCode.SharpZipLib.dll 组件，并添加引用