Hi, I decided to write here 'cuz I've had enough...
As I noticed there is no way to to ommit the full PostBack with FileUplad control, (I tried to deal with UpdatePanel and I also read about iframe).
The problem is, when file is uploaded, an asynchronous WebService method is invoked and after it completes it shows the result (some info)
While that asynchronous method is being processed, I want to update my progress bar (by jQuery). BUT jQUery's $.ajax method can't have the progress value until the FileUpload's postback ends. JavaScript's requests are queued while the postback ends. After that all requests get's the progress value. Only when I refresh page by myself the progress bar is updated. How to resolve it ? I'm running out of my nerves...