c#文件批量下载

参考：https://download.youkuaiyun.com/download/yuanmeng0910/4086437

步骤一：引用ICSharpCode.SharpZipLib.dll  相关下载方法

protected void downloadWord_Click()
{
        List<string> paths = new List<string>();
        string file = "/Files/word/2019-12/19/测试.docx";
        paths.Add(model.path);
        Download(paths, DateTime.Now.ToString("yyyyMMddHHssmm") + ".zip");
}

 private void Download(IEnumerable<string> 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( item));
                }
                file.CommitUpdate();

                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();
        }

步骤二：上述两个相关方法涉及的下载辅助类

 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
    }