File Uploader with Progress Bar for .NET

I need to develop a file uploaded for my web app.

My current uploader is iframe based async uploader w\o real progress bar. But I am looking for a file uploader with these reqs (c#, asp.net):

• Must allow single file and multiple (say 5) file upload
• Must allow uploading large files (single video file) 开发者_如何学运维and images (multiple images)
• Must show a real progress bar like the FaceBook or gmail uploader
• Better be light weight
• Easy to implemenent and easy to plugin
• Easy API, jQuery API for accessing file properties
• File type and size control during upload
• Not Java Based

If there is anything free, I will highly consider that.

Worst case, I am ready to pay a price for license (if I buy)

Please help me. Thanks for reading

I have used this with moderate success, i'm not sure it 100% satisfies all your conditions, but its probably worth a look:

http://ajaxuploader.com/