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Zone: > NEWSGROUP > Asp.Net Forum > windows_hosting.hosting_open_forum Tags:
Item Type: NewsGroup Date Entered: 2/25/2005 6:27:04 PM Date Modified: Subscribers: 0 Subscribe Alert
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FfejWhitey
Asp.Net User
Viewstate persistence problem2/25/2005 6:27:04 PM

0/0

I've been looking thru these forums to make sure I had it right for using viewstate to persist data in my user control. Here's the code I have: 


Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load


        If IsPostBack Then


            LoadState()


        End If


    End Sub





    Private Sub SaveState()


        ViewState("exportData") = exportData


    End Sub





    Private Sub LoadState()


        exportData = ViewState("exportData")


    End Sub





    Public Property DataSource() As String 'DataSet


        Get


            Return exportData


        End Get


        Set(ByVal Value As String) 'As DataSet)


            exportData = Value


            SaveState()


        End Set


    End Property





'I don't even think this does anything valuable


    Private Sub Page_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.PreRender


        SaveState()


    End Sub

This control is placed on another page and all that page does is set the DataSource property of my control. In debugging, I can see that, in fact the value is put into the viewstate. There is also a button on my control and sometime between when that button is clicked and the pageload hits the viewstate value that I put in there is wiped out and Viewstate("exportData") = Nothing. Am I missing something I need to do to include the viewstate in the parent page or something. I have been searching forums for hours but I can't seem to find this particular issue. Any help is greatly appreciated. Thanks!
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Web:
Viewstate On The Server Mar 23, 2006 ... We considered using our configuration table to manage this value so we could change viewstate persistence on the fly, but determined that ...
Efficient Server-Side View State Persistence Aug 5, 2008 ... No, to solve this view state problem once and for all, ... The view state persistence mechanism needs to be identified by a specific user ...
ViewState Compression and Persistence by Joseph A. De Guzman article,ViewState,Compression,Persistence .... The article is about ViewState Compression and Persistence. ...
ASP viewstate persistence ASP viewstate persistence. What would be the correct way to do this: Page A: ComboBox with values A/B/C Button which redirects to page B. ...
ASP.NET.4GuysFromRolla.com: Persisting Page State in ASP.NET 2.0 Jan 17, 2007 ... NET version 1.x, view state persistence could be customized by extending the Page class and overriding its SavePageStateToPersistenceMedium ...
CodeProject: Efficient Server-Side View State Persistence. Free ... The View State persistence mechanism needs to be identified by a specific ..... on the system for a full work day (10 hours) without any problems at all. ...
marklio - File-Based ViewState Persistence Solution "Updating my "multi-request-safe" File-based ViewState persistence for Whidbey" ... [Trackback] http://www.marklio.com/marklio/PermaLink,guid ...
Persistent ViewState Talk about Persistent ViewState. ... Go Back, Velocity Reviews > Newsgroups > ASP Net ยท Reload this Page Persistent ViewState ...
Efficient Server-Side View State Persistence, Two Dot DOH!! Aug 6, 2008 ... Efficient Server-Side View State Persistence, Two Dot DOH! ... Everything works as expected; Two Browsers (IE7 / FF3) - No problem at all. ...
.NET: Increase Application Perf with ViewState Persistence Tweaks ... .NET: Increase Application Perf with ViewState Persistence Tweaks and Optimizations. I was amazed most of us hate ASP.NET ViewState for its default poor ...




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