In this post Brett Balmer talks about dragging files into Azure storage using Silverlight 4.
I recently needed a way to upload images and other files to Windows
Azure Storage. I like the way some sites implement ActiveX controls or
other plugins that allow you to drag and drop the files onto the
browser itself for upload. Naturally when I read about the new
capabilites of Silverlight 4 to accept dropped files I was dying to
write a little upload control. This blog is hosted on Windows Azure,
and as mentioned in previous posts, the blog-entry content files
(images/xap files) are stored in Windows Azure Storage.