Hi Dave,
As for the ASP.NET AJAX updatepanel, it's built-in designed functionality
is to provide non-refresh postback and partial rendering for the page
fragment inside the update panel. It will not maintain scroll position. So
far for built-in scroll position maintain, there is only a setting on the
entire page(which is not AJAX specific).
Also, based on my research, I did find some other members who ever provided
some custom methods to maintain scrollposition in ASP.NET ajax panel (or
ajax awared page). You can have a look to see whether it helps:
#Maintain Scrollbar Position Inside UpdatePanel After Partial PostBack
http://basgun.wordpress.com/2008/06/09/maintain-scroll-position-updatepanel-
postback/
#ASP.NET AJAX Maintain Scroll Position from a Partial Page Update
http://www.eggheadcafe.com/tutorials/aspnet/7dd57635-0587-42ba-ae73-f52449e6
53bf/aspnet-ajax-maintain-scr.aspx
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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