Simple Silverlight Uploader with Progress Bar using HttpRequest or WCF
I thought I’d write a little bit about a simple Silverlight file uploader I’ve been playing with. I see a lot of postings out there asking how to do a file uploader that can show upload progress using Silverlight. There are a few issues to overcome like: how to you actually measure progress, and while using the HttpRequest, how do you update the UI from the worker thread? So this project will hopefully answer some of your questions.
Client-Side
I should make a quick mention that this can be done using either WCF or a simple HTTP request. In my opinion, I think using HTTP request provides better performance and comes with less deployment and maintenance hassle; but likewise it leaves a few other loose ends like security and message integrity (if left unhandled). For this example, I’ll mostly only discuss the HTTP request method. My sample code includes a WCF implementation for reference. (Maybe some of you WCF gurus can tell me how that looks). 
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