One of my clients has requested the functionality of uploading documents by dragging and dropping them in the browser window. The website is being built with ASP.NET 3.5. I know of the 'dragdropupload' add-in for firefox, which allows dropping files on an upload control, but I also need it to work in Internet Explorer.
Does anybody know of a way to programmatically enable this? Or are there perhaps any third party controls available (preferably free/open source)? It is acceptable if it is only possible to drop the file on an upload control. I cannot use any browser extensions like Silverlight or Flash.