Solved

report Viewer and Viewstate

Posted on 2011-03-03
7
1,404 Views
Last Modified: 2013-11-28
I am using the report viewer on my web application. I do not want to turn the viewstate on for the entire application. So the viewstate on the webconfig is turned off

However the viewstate of the page the control is on , the viewstate of the control, the viewstate of the master page have all been turned on.
the control is within a form runat=server

Still, the report viewer errs out with the message asp.net viewstate needs to be enabled.


0
Comment
Question by:kay2kay
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 74

Expert Comment

by:Jeffrey Coachman
ID: 35028020
...and if you turn on the viewstate on for the entire application, ...does it work...?
0
 

Author Comment

by:kay2kay
ID: 35028894
yes it does.. which we do not want to do.
0
 
LVL 74

Expert Comment

by:Jeffrey Coachman
ID: 35030467
<which we do not want to do. >

Just curious, ...Why not?
0
Get Actionable Data from Your Monitoring Solution

Your communication platform is only as good as the relevance of the information you send. Ensure your alerts get to the right people every time with actionable responses. Create escalation rules that ensure everyone follows the process and nothing is left to chance.

 

Author Comment

by:kay2kay
ID: 35030500
We have our own post-back system in place and we don't want to carry the payload of the view state.
0
 
LVL 74

Expert Comment

by:Jeffrey Coachman
ID: 35031108
OK, then wait for a few other Experts to chime in.

My thought is that perhaps you could turn viewstate on for the entire application, *temporarilly" (Just to get this up and running), until a less burdensome configuration is found.

JeffCoachman
0
 

Accepted Solution

by:
kay2kay earned 0 total points
ID: 35190302
Solution:


On our site we turn off the viewstate by default in the webconfig . The thought is, if the view state is turned on at the Page level, all the controls under it would be able to use the viewstate. This is what the general thoughts were in all the blogs I read and on this forum

So the key is that the masterpage viewstate needs to be turned on.  Which I tried, by setting the masterpage.viewstate as true in the OnInit of the page life cycle.
This didn’t work either.

Came across a bunch of articles (some of which I am referring here for reading) http://msdn.microsoft.com/en-us/library/wtxbf3hh.aspx
“In general, this structure has no effect on how you construct your pages or program them. However, in some cases, if you set a page-wide property on the master page, it can affect the behavior of the content page, because the master page is the closest parent for the controls on the page. For example, if you set the EnableViewState<http://msdn.microsoft.com/en-us/library/system.web.ui.page.enableviewstate.aspx> property on the content page to true but set the same property to false in the master page, view state will effectively be disabled because the setting on the master page will take priority.”



http://odetocode.com/Blogs/scott/archive/2006/10/12/masterpage-issue-with-viewstate-disabled-in-web-config.aspx

http://forums.asp.net/t/1028912.aspx/1?EnableViewState+override+not+working+for+page+when+setting+defined+in+web+config

http://stackoverflow.com/questions/1015742/why-isnt-my-page-enableviewstate-overiding-the-pages-enableviewsate-in-the-web

and of course the kicker
http://geekswithblogs.net/vivek/archive/2006/10/04/93094.aspx

“The main points to consider are:

1.We can turn on/off the view state only if the Parent control has the same turned on. If view state is disabled in the parent control, then there would be no effect even if we turn on property for individual controls.

2. The MasterPage takes its value from the Web.config file and will reflect the same only if the ContentPage has view state turned on. If not, then "there is nothing to turn off".

3. A MasterPage is slightly different from other controls, it is in charge of things until Page_PreInit() is over. Only after the PreInit() event, it behaves like a true child control of the Page.

MasterPages can be a bit tricky unless we undertsand the complete Page lifecycle and the sequence of events. In short, it is helpful to remember that a MasterPage behaves like a control inside the Conent Page and all events, except the Init(), fire first for the outer control and then for the inner ones. For e..g:, Page_Load() of a Conent Page will fire first and then of the MasterPage, similarly OnInit() of the MasterPage will fire before that of the ContentPage”
0
 

Author Closing Comment

by:kay2kay
ID: 35225312
Understanding the life cycle  model and the way master pages are used, helped me fix the issue I had.
0

Featured Post

Enterprise Mobility and BYOD For Dummies

Like “For Dummies” books, you can read this in whatever order you choose and learn about mobility and BYOD; and how to put a competitive mobile infrastructure in place. Developed for SMBs and large enterprises alike, you will find helpful use cases, planning, and implementation.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Access custom database properties are useful for storing miscellaneous bits of information in a format that persists through database closing and reopening.  This article shows how to create and use them.
You need to know the location of the Office templates folder, so that when you create new templates, they are saved to that location, and thus are available for selection when creating new documents.  The steps to find the Templates folder path are …
With Microsoft Access, learn how to specify relationships between tables and set various options on the relationship. Add the tables: Create the relationship: Decide if you’re going to set referential integrity: Decide if you want cascade upda…
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…

691 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question