How to write component to upload files directly to Windows Azure Blobs?

I've been experimenting with Windows Azure Blob storage using the samples using Silverlight.

I was wo开发者_JS百科ndering if it's possible to write a file upload component in Flash instead of Silverlight, since the former is installed almost everywere. I've never programmed in Action Script but I have a solid background in C# so that must not be hard.

Do you know any place where I can learn how to get it started?

You could alway upload the files to your web server and then have C# code upload them to Azure.

Additionally, the blob storage has a rest api so you could do it directly from flash, however I would be concerned about leaking keys to the public with such an implementation.

There doesn't have to be concern with sharing keys in JavaScript.

Azure storage supports "Shared Access Signatures" which allows you to give short-term Write privs to a single blob (or container, etc). All that's necessary is an additional query string parameter or two on your URL.