ASP。NET AJAX Toolkit ModalPopupExtender在ListView行为中

I am hoping that someone can help shed some light on this issue I've been struggling over for the last couple of days. I have been using the AJAX Toolkit ModalPopupExtender outside of ListViews perfectly fine, but for some reason I can't seem to wrap my head around why this code is not working inside of a ListView item template.I am hoping that someone can help shed some lig