43 questions
0
votes
1
answer
217
views
Facing issues in __eventvalidation and __viewstate in jmeter
i have a scenario, as given below
once the user navigating to planning page and
clicks on a menu,
it will open the lists of recipes in week wise.
if the users wants to add a recipe for a particular, ...
1
vote
1
answer
2k
views
Python Requests get __VIEWSTATE and __EVENTVALIDATION after __doPostBack
I am making requests to a website created using Asp.Net. I am using a Python Requests session to get the __VIEWSTATE and __EVENTVALIDATION variables and add them back to the data payload.
response = s....
- 8,564
1
vote
0
answers
121
views
WebForms keeps showing Event validation error on post
When I try to submit information from client to server, I receive Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/>. I've tried most ...
- 95
-3
votes
1
answer
414
views
I'm trying to log into a website with a curl php script but can't because of viewstate generator and eventvalidation. Is there any way to bypass that?
I'm trying to log into a website Using cUrl and scrape certain data from the site. It's a homework project. But the site has 3 different form data that changes every time I log in.
Is it possible to ...
- 23
0
votes
1
answer
52
views
Invalid postback or callback argument. Event validation requires unnecessary "using System.Web.UI"
I have a page with a bunch of text inputs, dropdowns, and buttons. All manipulation of the inputs is done server side. Javascript only adds event listeners which manipulate the contents of the text ...
- 4,538
1
vote
1
answer
2k
views
Jmeter EVENTVALIDATION and VIEWSTATE values passed incorrectly
I need to login a webpage. Passing the parameters from navigation screen,to POST to login screen i used CSS/Jquery extractor. of the three values extracted, Viewstate generator value is passed ...
- 39
0
votes
4
answers
4k
views
Could not handle View/state and Event validation in Jmeter Load testing
I am currently load testing a .Net web application. In which scenario is like, user will login and will do certain steps of navigation then he/she will fill one evaluation form, submit it and then ...
- 51
1
vote
0
answers
252
views
Keep __EVENTVALIDATION server side
I'm trying to keep the pagesize of an ASP.NET webforms application as small as possible.
One of the steps was keeping the hidden field values for __VIEWSTATE and __EVENTVALIDATION server side.
...
- 8,067
0
votes
2
answers
474
views
Page Event Validation failure happens in one environment, but not the other
I am getting a rather standard event validation error under a particular set of steps with our web app:
Application_Error intercepted exception: Exception of type 'System.Web.HttpUnhandledException' ...
- 7,646
1
vote
1
answer
375
views
Invalid postback or callback argument - No server controls except a button (DNN Module)
My DNN module page only contains some divs and a LinkButton. The contents of the div are populated using jQuery AJAX. The button is used to post a file to the server that needs to be uploaded. I am ...
- 493
1
vote
1
answer
685
views
I am getting this error when running my web page developed in asp.net
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %&...
- 11
0
votes
1
answer
78
views
Event of controls on othe page not being fired and gives error
This is How I loadan aspx page in a div
<script type="text/javascript">
$(function () {
setInterval(function () {
$('#div1').load('frmChatRequest.aspx', function () {
...
- 109
0
votes
1
answer
328
views
How can I post to a HTTP endpoint while not providing the __VIEWSTATE and __EVENTVALIDATION for ASP.NET?
I'm trying to query a delivery companies consignment status page, though it uses ASP.NET viewstate which when not supplied as parameters it does not return a result.
How can I reliably either:
Not ...
- 28.2k
0
votes
1
answer
159
views
RegisterForEventValidation on html input
I have a HtmlTable and I need to get the innerhtml from it, without setting the
EnableEventValidation="false"
Therefore I would like to Register the textinput in a overridden method, here is an ...
- 130
2
votes
3
answers
4k
views
How to pass Event Validation when editing a select list from JavaScript
I have two select lists in my ASP.NET site that are filled by the server with some elements.
// .aspx
<asp:dropdownlist id="abc" runat="server"></asp:dropdownlist>
<asp:dropdownlist id=...
- 17.8k
1
vote
1
answer
1k
views
Deserialize the EventValidation object
I am trying to serialize and deserialize the event validation store. I have used code on MSDN to do the same with the viewstate. I cannot seem to get the data out of the EventValidation object.
...
- 31
7
votes
3
answers
3k
views
ASP.NET EventValidation fails when .NET 4.5 Framework is installed in only one server behind the load balancer
We have installed .net 4.5 Framework in one of our web servers. Our applications are targeted for .net 4.0 and run off multiple servers behind a load balancer.
After the installation we get the ...
- 159
1
vote
0
answers
231
views
RegisterStartupScript in User Control causes Event Validation error
I have the following code in the code behind for a user control attached to a simple button click event. How do I avoid this cause an invalid postback? Its generating an Event Validation error.
...
- 986
3
votes
1
answer
3k
views
Invalid ViewState error in Firefox when EnabledEventValidation is on
I have a stable error that reproduces each time i hit F5:
There are 2 grids (master-detail) and the error actually happens on callback that is raised by my client-code when focused-row-changed event ...
- 4,725
0
votes
1
answer
4k
views
Moving items from one ListBox to another and getting items in ListBox
I have an ASP.NET Wizard control. On my second step, I have two ListBoxes; the first ListBox item is populated from the server when the page loads.
The user then selects data from ListBox1 and moves ...
2
votes
2
answers
2k
views
Access __VIEWSTATE & __EVENTVALIDATION in C#
In ASP.NET, is it possible to get the values of __VIEWSTATE and __EVENTVALIDATION hidden fields into a variable in C# (server side) in, let's say, overriding the Render method?
I have tried:
...
- 649
0
votes
3
answers
2k
views
.net ListView eventValidation error after RegisterforEventValidation
I have the following Listview defined
<asp:ListView
ID="reportData"
EnableSortingAndPagingCallback="True"
AllowPaging="True"
AllowSorting="True"
PageSize="...
- 170
4
votes
2
answers
8k
views
Invalid postback or callback argument. Getting only In Case of Image Button
I am getting the following error :
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page ...
user1321748
3
votes
1
answer
5k
views
ASP.Net CascadingDropDown and EnableEventValidation="false"
I have just got a CascadingDropDown from the AJAX Toolkit working with SelectedIndexChanged to redirect to a page passing a querystring of the selected value. I'm well chuffed!
However, I only got ...
- 1,456
1
vote
1
answer
514
views
Event Validation - Is it truly necessary for Js Heavy applications
This thing is really show stopper, i've been thinking about event validation and is this really necessary. I am looking into ways to avoid event validation for building a webservice-javascript ...
- 11.1k
1
vote
1
answer
750
views
Error on Postback
I have a webpage that has a grid on it. When you click edit, a popup modal window opens. Inside the popup modal window, there is a grid and below it a dropdownlist and save button. When you click save,...
- 885
2
votes
0
answers
2k
views
Getting Column Index when selecting cell in GridView
Below is the code that I use to select each individual cell. However, when I do select that cell, I need the data in that cell, the rowIndex and columnIndex. Unfortunately after all the research and ...
- 21
1
vote
0
answers
452
views
Postback using WebClient and EventValidation
There's a web page from one of our subsidiaries. The page has EventValidation turned on. I've tried grabbing it and passing it as a postback value, but that doesn't work (obviously). Any ideas (...
- 8,274
2
votes
0
answers
1k
views
exception:Invalid postback or callback argument. Event validation is enable, caused by jQuery
Well I've been reading about this (actually not here in stackOverflow), and I have a few question and need some advice about this "old" topic.
Firtst at all, what I do?
Change value of a on "...
- 1,482
4
votes
1
answer
4k
views
Event validation: Allow __doPostBack for one control and *any* arguments
I'm using
__doPostBack(clientIdOfSomeButton, someData);
to create a PostBack in JavaScript. The problem is that someData is not known in advance, and event validation kicks in because I cannot ...
- 172k
9
votes
5
answers
30k
views
se the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation
guys, I have a usercontrol in my asp.net 3.5 application and I am passing some plain text on button click event. button is situated in the usercontrol. but when I fire the event, I am getting the ...
- 58.4k
2
votes
0
answers
3k
views
Event validation issue with updatepanel "Invalid postback or callback argument"
I am an UpdatePanel virgin and I'm having problems.
I have 2 drop down lists. I am basically trying to update the contents of the second drop down depending on what I select on the first drop down. ...
- 10k
0
votes
1
answer
356
views
When 'ViewState' of a form is changed?
There are to hidden fields on every standard ASP.NET form: __VIEWSTATE and __EVENTVALIDATION. When the value for these fields would change for a specific form ?
- 30.8k
3
votes
1
answer
1k
views
ASP.Net Event Validation fails on Android phone browser
We're running a fairly large site, and a lot of our visitors have started using their Android based cellphones to visit the site. However when they try to login, we get an Event Validation error:
...
- 13.9k
0
votes
2
answers
166
views
getting "Invalid postback or callback argument" error when click on the Image button
In my application, I have videos with an image. When I click on any video, it is showing this message:
Invalid postback or callback argument. Event validation is enabled
using in configuration or &...
- 30.2k
13
votes
4
answers
8k
views
Disable EventValidation for single control, is it possible?
I know this is a very debated topic, and usually when you are thinking about this as a solution you might want to rethink your UI logic.
I know I can pass validation using ClientScriptManager....
- 12.3k
3
votes
2
answers
993
views
Tracing invalid postback or callback argument
In my unhandled exception logging I see this error sporadically through the day on a given page. I don't have any controls that I create programmatically on the page or databind any buttons onto the ...
- 33k
1
vote
2
answers
2k
views
How to reset ASP.NET Form? aspnetForm.reset() causes Event Validation invalid postback error
I need to reset an ASP.NET form. I am trying to use document.aspnetForm.reset() but then whenever I try to do anything after that I get an event validation error. How can I reset my form without ...
- 18k
0
votes
1
answer
3k
views
ASP.NET Master Page: Event Validation Error
I included a repeater in my master page.
The repeater has a button that I set its CommandArgument.
However when I click the button I get the following exception:
System.ArgumentException: Invalid ...
- 105k
1
vote
1
answer
6k
views
ClientScriptManager.RegisterForEventValidation with HiddenField
I am trying to use to use ClientScriptManager.RegisterForEventValidation to register a hidden field and value that I am adding with ClientScriptManager.RegisterHiddenField. I doing this during the ...
Sigray
4
votes
1
answer
2k
views
Disabling ASP.NET EventValidation
We're tired of getting exceptions regarding "Invalid postback or callback argument" in our web app. What scenario(s) causes this error?
After talking to users, we've determined that one possible ...
- 82.4k
5
votes
5
answers
1k
views
How do I prevent exceptions from half-loaded pages' form submission while using asp.net event validation?
I have a page with some dynamically added buttons. If you click a button before the page has fully loaded, it throws the classic exception:
Invalid postback or callback argument.
Event validation is ...
- 19.8k
5
votes
7
answers
7k
views
ListBox elements rearranged with JavaScript causing event validation error on postback
I have created an item swapper control consisting in two listboxes and some buttons that allow me to swap items between the two lists. The swapping is done using javascript. I also move items up and ...
- 11.3k