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Zone: > NEWSGROUP > Asp.Net Forum > general_asp.net.master_pages_themes_and_navigation_controls Tags:
Item Type: NewsGroup Date Entered: 7/30/2007 9:10:30 AM Date Modified: Subscribers: 0 Subscribe Alert
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maxald
Asp.Net User
Huge viewstate with treeview7/30/2007 9:10:30 AM

0/0

Hi! Im using the treeview control as a menu on my page. It works fine except that my viewstate is getting really big. Is there anyone that have some ideas how to trim my tree view (disable viewstate is not an option)? There is also an empty table tag surrounding each node in my tree view, can it be deleted?

 
maxald
Asp.Net User
Re: Huge viewstate with treeview7/30/2007 11:31:34 AM

0/0

I have found one attribute that really did some magic! :) 

PopulateOnDemand="true" in <asp:TreeNodeBinding />

Sure there is of course a small preformance drop when you expand or close nodes in the treeview control. But my page size shrinked from 170kb to 68kb so my overall performance really did get a boost! I've also shortened some id's that gave me a few more kb's...
maxald
Asp.Net User
Re: Huge viewstate with treeview7/30/2007 12:19:21 PM

0/0

Another question, same issue... is it possible to close the previous opened node on the client when you expand a new one so there will allways be only one node open?
maxald
Asp.Net User
Re: Huge viewstate with treeview7/30/2007 1:23:44 PM

0/0

PopulateOnDemand wasn't as good as I thought... once a node has been opened it is added to viewstate and there it stays over postbacks even if it is closed. Sad Is there any other menu alternatives when you have a LARGE amount of links (1000+) to be displayed? Erlier I was using the <asp:menu> but the performance when there was so many items in it was extremely bad. Thats why I am using the treeview as a menu, still I would prefer a three level menu of some kind.

 Here I have a beta of my webbpage, its the brown menu to the left at default.aspx (the menu contains swedish letters so it might look strange but I think you got the idea anyway)

http://217.209.222.143/beta_test.aspx
pass: norraavagen
Johnson2007
Asp.Net User
Re: Huge viewstate with treeview8/2/2007 10:00:47 AM

0/0

Your treeview menu is very orderliness and beautiful. but I think to reduce the viewstate the easiest way is to generate you treeview nodes dynamicly. I saw the number of the treeview's nodes is not very large. So I sugguest that you generage the nodes dynamicly.

May it helps...

Johnson
5 Items, 1 Pages 1 |< << Go >> >|


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