Scenario: I need to use multiple dynamic file upload on a user control, and i tried to use the method you posted some day but i came to the problem... The javascript code functions perfect at client time, but at the server time, when I click on the upload button, the Control count says it has 0 controls.
One of the possible solution you mentioned, is to set enctype="multipart/form-data" in the form holding the controls, but i don't know how to do that.
Question: do i have to create a new form for each control added to work or how it could be?
Reference: http://www.codeproject.com/Articles/24914/Multiple-Dynamic-File-Uploading
Thanks!