Web下载文件已损坏asp.net [英] Web Download file is corrupted asp.net

问题描述

在我的asp中.net网页，我有一个网格和下载按钮。网格从共享位置填充有关文件的信息，
下载按钮在压缩后下载所有文件。我正在使用Ionic.Zip库进行压缩。以下是用户单击下载按钮时执行的代码。在将文件信息（如名称
等）绑定到GridView控件之前，问题是下载工作正常，但在将文件信息绑定到GridView控件后中断。我收到错误"压缩的zip文件夹无效"但是当我使用Ionic.Zip库保存zip文件时它没有损坏，我可以手动打开
！

  HttpContext.Current.Response.Clear();
                Response.ClearContent();Response.Clear();string LogPath = ConfigurationManager.AppSettings["LogPath"];
                LogPath = Path.Combine(LogPath, Application);
                //Zip File will be created when one of the file is in use during Zip.
                ZipFile Zip = new ZipFile();
                Zip.AddDirectory(LogPath);
                string _DateTime = System.DateTime.Now.ToString("ddMMyyHHmmssfff");
                string ZipFileName = string.Format("ZipFile{0}.zip",_DateTime);
                //Zip.Save(Response.OutputStream);
                ErrorMessage.Text = Response.OutputStream.CanRead + " " + Response.OutputStream.CanWrite;
                string _Path = MapPath(".");
                _Path = Path.Combine(_Path, ZipFileName);
                ErrorMessage.Visible = true;
                Zip.Save(_Path);
               // Response.AppendHeader("content-disposition", "filename=" + ZipFileName);
                Response.AppendHeader("content-disposition",
            "attachment; filename=" + ZipFileName);
                //Response.ContentType = "application/zip";
                Response.ContentType = "application/unknown";
                Response.WriteFile(_Path);

Kaleem。

推荐答案

这听起来像一个ASP.Net问题，在适当的论坛上更好的问题：

http://forums.asp.net/

从ASP下载二进制数据的预期方法.Net服务器通过自定义HTTP处理程序：

http://www.codeproject.com/Articles/544289/Restricting-files-download-using-HTTP-Handler-base

The intended way to download binary data from a ASP.Net server is via a custom HTTP Handler:
http://www.codeproject.com/Articles/544289/Restricting-files-download-using-HTTP-Handler-base

从.NET 4.5开始我们有一个用于制作和使用zip文件的类（甚至没有解压缩）：
HTTPS：//msdn.mi crosoft.com/en-us/library/system.io.compression.ziparchive.aspx

Starting with .NET 4.5 we got a build in class for making and working with zip files (even without unpacking):
https://msdn.microsoft.com/en-us/library/system.io.compression.ziparchive.aspx

缓存某些常见的文件组合可能是值得的。但一般来说，写一个磁盘是完全有问题的。

It might be worthwhile to cache certain common combinations of files. But generally speaking writing the file do a disk is entirely unessesary.

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