Accress Parent Page's Viewstate?

Apr 6, 2010

I have a page in ASP.NET.I have a nested class inside the page.I have a property in this nested class.How can I access the page's viewstate from the property's Set statement?

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I make a user control with DataList to expose pagining . I choose to use ViewState to save the state of pagining (TotalItems , CurentPage etc) , but it seems the view state of the parent page is not "synchronized" with the one from user control . It's basically the same situation like the example :

I have a dummy user control :

"<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="WebUserControl" %>"

and the code -behind

"public partial class WebUserControl : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)[code]...

The question is, why do I have to click twice to get the right result ...3 . I mean at the first click I still get the value 0 .

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I have a bit of javascript that presents a modal to the user with the rest of the page "grayed out." Pretty common these days. The modal allows you to specify a URL which then uses AJAX to serve and display. What I need is that when the control posts back, it posts back to the parent page, not the modal page. To attempt this, I used javascript to alter the target of the modal page's form element to the parent page's URL. When I try this I get the following error:

Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

This is done locally and as of now, the app will never be on a cluster. I think this has to do with the validation process and .NET doesn't like that I've changed the target. Anyone know a way around this? I really need this to work how I described.

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[Code]....

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}

[Code]....

when the page is not Posted back, I saved all values in the viewstate.

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