 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
.NET Forum / ASP.NET / General / May 2008AJAX vs. ViewState?
Hello all... Quick Q... I have a page which on load, retrieves some data from the db, and then stores it in the viewstate. It is a small snippet of XML. I have some controls on the page which post back via AJAX; in their handlers, the page attempts to refer to this XML from the viewstate (to minimize roundtrips to the db server). It seems though that when they post back, this information (the XML) is gone. Do AJAX postbacks not have access to what was stored in the viewstate? Looking online, I see a lot of people questioning about this, but no definitive answers. Thanks in advance, - Arthur Dent. ViewState is a hidden field in the page that is encoded. Unless you send that information back to the server in your AJAX call, it will never be available, as the server does not store ViewState. If, instead, you store items in session, you can pull them, but I would not retool a site to stick everything in session just so you can use it with AJAX. As each field on the page is accessible, you can send as much info as you like. This will generally be better than wiring the ViewState to AJAX.  SignatureGregory A. Beamer MVP, MCP: +I, SE, SD, DBA Subscribe to my blog http://gregorybeamer.spaces.live.com/lists/feed.rss or just read it: http://gregorybeamer.spaces.live.com/ ************************************************* | Think outside the box! ************************************************* > Hello all... > [quoted text clipped - 12 lines] > Thanks in advance, > - Arthur Dent. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
|
Reply to this Message
|
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.