viewstate

Erratic Invalid Viewstate issue in a .NET application

由 眉间皱痕 提交于 2019-11-27 16:50:25
I seem to be getting a "invalid viewstate" every now and then in the event viewer for my ASP.NET application. Most of them (95%) seem to be referencing ScriptResource.axd (the application uses the ASP.NET AJAX library). There is no way I can remove the Ajax library either as Ajax is used everywhere.. How can I reduce these errors? I'm getting ~ 100-200 errors a day and I have no idea how to fix them! They come from different browsers, different IPs and geographical locations. It's difficult for me to reproduce the problem because it barely even happened to me, it has only happened to me 3-4

Postback not working with ASP.NET Routing (Validation of viewstate MAC failed)

由 只谈情不闲聊 提交于 2019-11-27 14:25:39
问题 I'm using the ASP.NET 3.5 SP1 System.Web.Routing with classic WebForms, as described in http://chriscavanagh.wordpress.com/2008/04/25/systemwebrouting-with-webforms-sample/ All works fine , I have custom SEO urls and even the postback works. But there is a case where the postback always fails and I get a: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate

How to access viewstate using javascript?

由 半城伤御伤魂 提交于 2019-11-27 13:06:03
问题 I am trying to access view-state in client side but following exception coming : JAVASCRIPT: <script language="javascript" type="text/javascript"> var vCode = '<%=ViewState("code")%>'; alert(dateView); </script> CODE BEHIND: Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load ViewState("code") = "EE" End Sub Anybody suggest me how to do it? 回答1: I would suggests to use RegisterHiddenField than mixing server/js codes: You may try this sample: Protected

Asp.net Validation of viewstate MAC failed

由 放肆的年华 提交于 2019-11-27 12:40:33
I am receiving the following error at certain times on asp.net website. Sys.WebForms.PageRequestManagerServerErrorException: 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. When page refresh goes,no problem.How can I solve this problem? mBotros If you're using a web farm and running the same application on multiple computers, you need to define the machine key explicitly in the machine.config file: <machineKey

asp.net c# MVC: How do I live without ViewState?

由 北城以北 提交于 2019-11-27 09:12:42
问题 I am just looking into converting WebForms to MVC: In .net MVC, what concepts make ViewState something thats not required? If a form is posted back on iteself etc (ie a postback)? how does the page/usercontrol maintain its state? What tricks are people doing to maintain some kind of state and not resort to session state? Surely, a completely stateless environment cant exist? 回答1: But of course it can. In fact, the web is stateless. Any thoughts to the contrary are the aberration, in fact. Web

How I can deactivate ViewState without Control problems

由 不想你离开。 提交于 2019-11-27 08:04:57
问题 I wrote a ASP.NET Application and it run in IIS7 of a Server. If I open this webform in my Browser and show me the Sitecode I see this... I have many Controls how Buttons,Labels,TextBoxes and a ListView. I try to deactivate ViewState in the web.config but if I deactivate this my Application don't run correctly. What can I do? 回答1: Deactivate only the controls that not need the viewstate. To do that you need to understand what the viewstate is. Viewstate is where the page save and remember the

Should I ignore the occasional Invalid viewstate error?

由 风流意气都作罢 提交于 2019-11-27 04:59:07
问题 Every now and then (once every day or so) we're seeing the following types of errors in our logs for an ASP.NET 3.5 application Invalid viewstate Invalid postback or callback argument Are these something that "just happens" from time-to-time with an ASP.NET application? Would anyone recommend we spend a lot of time trying to diagnose what's causing the issues? 回答1: Well it depends. Invalid viewstate can happen for a variety of reasons. Viewstate is too big and has not finished rendering

How to optimize class for viewstate

由 依然范特西╮ 提交于 2019-11-27 02:56:22
问题 If I have an object I need to store in viewstate, what kinds of things can I do to optimize the size it takes to store the object? Obviously storing the least amount of data will take less space, but aside from that, are there ways to architect the class, properties, attrbutes etc, that will effect how large the serialized output is? 回答1: My basic points. I use small names for class and variable, or I use the [ XmlAttribute ("ME")] command I try to not place default values especial if the are

The state information is invalid for this page and might be corrupted. (Only in IE)

由 倾然丶 夕夏残阳落幕 提交于 2019-11-27 02:52:24
问题 Can anybody help me out with this exception. I have tried couple of fixes but nothing worked. I am getting this exception only in IE(7, 8 and 9). When i load the page first time, it brings up a dropdown. where i select a specific vendor and it makes a page post back and returns the required information. If i change the vendor it will still load the information. When i load a control onto page using $.ajax request dynamically and than go back and change the dropdown selection(select a

Failed to load viewstate. Happening only occasionally. Tough to recreate

由 对着背影说爱祢 提交于 2019-11-27 02:44:41
问题 Details of Error are given below. This error happens only occasionally / rarely / sometimes and there aren't any steps to reproduce it. How can I know which Control is throwing this Viewstate error? Error Message: Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and
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