AJAX and HTMLInputFile - Patch Found

Hello Friends

I want to let you know one result that I found during my development work may be it saves someone's hours and days work.

I was trying to integrate write a webpart where HTMLInputFile control was inside AJAX Update Panel.

But when I was trying to access file which I have uploaded by HTMLInputFile , It always returns "NULL" as HTMLInputFile.PostedFile.

For try,when I deleted AJAX UpdatePanel and run it works fine. So that is bug/error/patch that we can not use HTMLInputFile under AJAX Update Panel.

Disha Shah