UpdatePanel in EditItemTemplate of Gridview causing full page refresh

Hi,

I tried to search for solutions, but couldn't find any. Everywhere they are talking about Gridview within UpdatePanel. In my case I have an UpdatePanel within the EditItemTemplate of a Gridview and a DropDownList in that EditItemTemplate is causing postback on SelectChange event. I just want that cell or at most that row of the gridview to be partially rendered, but the whole page flashes.

I have used an update panel elsewhere on that page, but outside the gridview and it is working fine.

Is UpdatePanel not supported within Gridview templates?

Thanks!