在asp.net中上传大文件

Question

I want to upload 30GB with asp.net file upload control, i have heard that ftp can do this or some advanced uploader. I searched but did not find any suitable code or some open source plugin for asp.net. Do you know some library or whats the right way to do this, i am confused.
I am in search of ASP.Net file upload which could upload large file eg 30GB, and with any logic like ftp or some other resuming way. So is there any plugin which can do this job?

Answer 1

I don't think you can do this. Many browsers have upload limit ~ 2GB. Think about different solution than HTTP POST, eg direct FTP upload.

Answer 2

Here is a pretty good writeup of the problem http://weblogs.asp.net/jgalloway/archive/2008/01/08/large-file-uploads-in-asp-net.aspx

In my own experience working with gigabyte uploads in .net several years ago, it is not easy within the common controls and infrastructure. You will be fighting http timeouts, and have to adjust the web.config to allow for the file size and changes a bit in web.config.

What has to happen to make it work is some form of chunking. So you divide the file up into much smaller pieces and then attempt to upload each one. Then you will have to keep track of which pieces you have gotten and which you have not.

A better/easier solution is to add some RIA functionality to your application so you can handle the upload in

Answer 3

You could try NeatUpload http://neatupload.codeplex.com/ . I've used it last time for uploading files as large as 10MB without problems. Never tried it with multi GB files though.

The control requires full trust.

Answer 4

我认为最好的应该是WebDAV服务器引擎方法http://www.webdavsystem.com/server/documentation/large_files_iis_asp_net