在Editmode中如何在Listview中查找Ajaxfileupload控件

I'm trying to find ajaxcontroltoolkit:ajaxfileupload which is placed inside a ListView in EditItemTemplate mode. I need to say i already tried to find this control in my ListView in these two events without result: ItemEditing and ItemDataBound. Should I forget to use ajaxfileupload inside ListView or GridView? or is there any solution for this problem?!I'm trying to find ajaxcontroltoolkit:ajaxfileu