Question

Is there some open source file upload (application) solution for a scenario like this? We have users who might want to upload really giant files, could be several GB’s in file size in fact, and it seems like a regular file upload textbox isn’t going to be a good choice here due to timeouts, etc…

Thanks for any advice…

Answer 1

Jon Galloway has a good article here: Large file uploads in ASP.NET

He mentions NeatUpload (which is free, and posted under the LGPL, a business-friendly open source license) in the article, and the link to the codeplex page: http://neatupload.codeplex.com/

Project Description

The NeatUpload ™ ASP.NET component allows developers to stream
uploaded files to storage (filesystem or database) and allows users to
monitor upload progress. It is open source and works under Mono’s
XSP/mod_mono as well as Microsoft’s ASP.NET implementation.

It features several custom controls, including:

• MultiFile allows all users to select multiple files to upload and
  allows Flash 8+ users to select multiple files from a single file
  selection dialog.
• ProgressBar displays the upload progress either inline or in a popup.
• UnloadConfirmer prevents users from accidentally interrupting an upload by leaving the page.

Features

• Works in web gardens and web farms.
• Works under medium trust environments when installed in the GAC.
• Works under Mono’s XSP/mod_mono and Microsoft’s ASP.NET 1.1 or higher.
• Easy to install and use. Add the UploadHttpModule to the section of your Web.config
  and drag-and-drop the controls using the Visual Studios Web Forms
  Designer.
• ProgressBar control can display processing progress in
  addition to upload progress.
• ProgressBar control uses AJAX-style
  refreshless updates on modern browsers when JavaScript is available,
  but also allows users without JavaScript to see upload progress.
• Allows customization through styles, custom progress display pages,
  UploadStorageProviders, and UploadStateStoreProviders, and provides an
  API for creating your own file upload and progress controls.
• Falls back to using ASP.NET’s HttpPostedFile if the NeatUpload UploadHttpModule is not present. This makes it easy to remove the
  HttpModule if for some reason it causes problems.
• Streams uploads directly to storage. This conserves server memory, allows larger uploads, and helps prevent Denial of Service attacks.
• Removes uploaded files when an error occurs. This helps prevent disk space leakage.
• Licensed under the Lesser General Public License (LGPL), a business-friendly open source license.