PowUpload is an ASP.NET file upload control

File upload component features

•   Uploads up to 4 GB files (limited by IIS)(new in version 1.3) without in-memory caching of requests. This feature allows you to upload of large files to a server with the low load of RAM and to saved from “System.OutOfMemoryException” error.
•   Provides rich progress and status information during the upload process.
•   Resumable upload(PowUpload supports PUT method defined in W3C RFC 2616 that is specialy designed to upload files. PUT method allows resumable upload which PowUpload also supports) (new in version 1.3)
•   100% Server-side control. Does not require installation on the user computer.
•   Compatible with any browser and OS on the user side.
•   Compatible with SSL (HTTPS) and any kind of authentication.
•   Unicode file names and form values support.
•   Image size and type extraction functionality.
•   Possibility to cancel an upload anytime with saving fully uploaded files. (new in version 1.3)
•   Stores non file items of the form in own collection or in the built-in ASP.NET collection Request.Form.
•   The Classes of the control has properties and methods with the same signature as in the built-in ASP.NET Request.Files collection. This gives you an opportunity to simply replace the built-in ASP.NET upload support with our one or use simultaneously the both.
•   Fully Managed code and CLS compliant.
•   Supports multiple files upload from multiple users at the same time.
•   Upload speed limit. (new in version 1.3)
•   Independent of httpRuntime maxRequestLength parameter.
•   Allows to terminate connection any time or if too large file uploaded. (new in version 1.3)
•   Access to uploaded Form variables and files while uploading. (new in version 1.3)
•   Includes HttpHandler that allows to do any your custom actions while upload. (new in version 1.3)
•   Includes sample of HttpHandler that directly saves files to SQL database. (new in version 1.3)
•   Settings can be set in Web.Config or while runtime: common or for individual request. (new in version 1.3)
•   Includes example of Progress bar without Page postbacks (AJAX technology)
•   Example of extracting ZIP archives on server side. So clients can upload multiple files, folders and large folders structures.
•   Easy installation with the help of setup.exe or by copying the Element-IT.PowUpload.dll file to the Bin\ folder of your application.
•   Examples of use in C Sharp and VB.Net with a code behind or without.
•   Includes an open source example of the file download feature without memory leak on the server.