Web Forms :: Page Goes To Error After Click Before Page Fully Loaded / Invalid Postback Or Callback Argument
Oct 25, 2010
When user cliick on the control before page fully loaded it goes to error page.
Following is the trace.
Execution Error
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
[code]....
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Mar 26, 2010
When i tried to edit a record present in a gridview I am getting the following error "Invalid postback or callback argument.Event validation is enabled using <pages Enable event validation="true"/> in configuration or <% @ page EnableEventValidation="true" %> in a page.For security purposes,this feature verifies that arguments to postback or callback events originate from server control that originally render them.If data is valid and expected,use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation."
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Jan 6, 2011
I have a user control in the sidebar(in my web site) for display title and picture of any of news. his usercontrol in all of the pages is observable. when user click on the picture navigate to the page News.aspx for more details. first time i can but in second time when i click on another picture in the News.aspx i get an error like below:
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. but when i reload the page the problem is solved my code is:
[Code]....
and my page directives is
[Code]....
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Mar 28, 2011
Typically I get this error when I am using AJAX, but I'm not using any AJAX at all in this page. Yet I'm getting this error.
Invalid postback or callback argument Here is my code.
[Code]....
[Code]....
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May 7, 2015
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:BoundField HeaderText="Name" DataField="name" />
<asp:BoundField HeaderText="Member_id" DataField="unique_id" />
<asp:BoundField HeaderText="Batch" DataField="batch" />
[code]...
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Apr 7, 2010
Using ASP.NET VB, I have a form with some text boxes and a Gridview. If a user clicks the Edit button on a row in the gridview, and then tries to submit the form with a row still in edit mode on the Gridview, this error is generated -
"Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. "
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Apr 13, 2013
I am getting the following error on on clikcing checkbox from checkbox list in my project.
Error:
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
If i set <pages enableEventValidation="false"/> then on clicking the submit button the information is not saved in database just page is refreshed.
aspx.cs file code:
protected void btnSubmit_Click(object sender, EventArgs e) {
if (con.State == ConnectionState.Closed) {
con.Open();
}
SqlCommand cmd = new SqlCommand(@"insert into MainTable values(@CollegeName,@AffilatedWith,@CollegeType,@Country,@City,@State,@EstablishmentYear,
[code].....
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May 4, 2010
i have had this problem before but haven't found a solution yet. The solutions that i have come across are either bad for security or worked on old versions of the .Net framework. I am using VB.net with framework 3.5 and i get the following error when clicking on a button that is a trigger for an updatepanel:
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
The msg states that you need to use the ClientScriptManager.RegisterForEventValidation but i can't find anywhere which shows a working example of this in VB.net & in .net framework 3.5. Can anyone give me a step by step guide on how to resolve this postback validation error?
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Sep 29, 2010
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the clientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. I have few dropsdowns and a button in a page. When i click on that button , i get above exception. What is the best way to fix this exception? I dont want to set enableEventValidation to false in config or at page directive.
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Feb 11, 2011
I have a page that uses a master page. The following code only shows the bare minimum of the page:
[Code]....
Code-behind:
[Code]....
The [Code]....
My guess is that it may releated to the ID's that are recreated.
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Jan 27, 2010
I have a datalist which will display a list of groups from the database. In every group record, i have a button binding to it, and i give it a commandName call "joingroup" . When a user actaully clicks on the button(btnJoinGroup), the commandName fires. The problem i am facing now is, whenever i click on the button, i get this error below:
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
aspx code
<asp:DataList ID="DataList1" runat="server" RepeatColumns="1" OnItemCommand="DataList1_ItemCommand">
<ItemTemplate>
<br /> [code]....
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Aug 17, 2010
I had web site I launched it on server and it worked well internal but when it being online this error appear in registration form<error>Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
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Nov 21, 2010
I'm having this wierd issue I hope you could help me with.I have two drop down lists in my page, and an accordion.When a value is chosen for the first DDl it loads specific values from my database into the second ddl.I've put the second one inside an Update panel, and added the first DDL as AsyncTrigger, so whenever someone chooses a value from the first DDL it loads the second one without refreshing the page.After a value has been chosen for the second DDl the accordion should be populated with data.I've ran some tests and noticed that choosing a value from the second DDL won't populate the accordion, so I've added another PostBack trigger to the second DDL- the ddl itself.Sometimes it works fine- I choose a value from ddl2 and the accordion shows fine, but sometimes I get this error message:Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation."Before putting the second ddl inside the update panel everything worked well so I'm a bit baffled here.
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Aug 3, 2010
I have a web page with various controls. Two of them are dropdownlists. The first dropdownlist gets populated from an xml file on the page_load event. This works fine. To the first dropdownlist a cascadingdropdownlist extender is attached which calls a webservice each time the selection in the first dropdownlist is changed. This works fine too. Underneath my two dropdownlists I have a button which posts the page back. However, when I have made a selection in the second dropdownlist and click the button I get the following error:
Server Error in '/' Application. Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.
If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[code]....
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Mar 8, 2010
I have searched high and low on this error, but my problem stems back to which control is causing this problem. In theory the problem starts when someone goes to a specific tab and clicks a button to download a PDF file. After doing that if I use a dropdownlist the error pops up.I have checked the code etc. just cannot figure out which control is triggering the error. I can identify the control that is the problem?
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Jul 27, 2010
I have a TabContainer, within a tab, i have a gridview, within the gridview i have a ImageButton. When I click on the ImageButton, I will call a javascript. The javascript will call a Hidden Button click. This hiddenbutton is the TargetControl of the Modalpopup so that when I click on the ImageButton, modalpopup is trigger. The Popup panal, Hidden Button and ModalPopupExtender below:
<asp:Panel ID="panEditAccessLog" runat="server" CssClass="gc_modalPopup" Style="display: none" BorderWidth="0px">
<table width="400px">
<tr>
<td width="150" height="20">
Employee ID:
[code]...
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Dec 31, 2010
I have a a dropdown on a page
<asp:DropDownList ID="drpName" AutoPostBack="true" AppendDataBoundItems="true" runat="server" ></asp:DropDownList>
and I on occasion want to add items to it using javascript/jquery.
When I select the items that have been added and it does a postback I get the following error:
Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
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May 3, 2010
But I have another problem, my gridview is inside UpdatePanel and when I click on prev or next button I get exception: "Sys.WebForms.PageRequestManagerServerErrorException: Invalid postback or callback argument. Event validation is enabled using <pages
enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation."
Do you know what should I do to make it work?I don't think that I should change enableEventValidation to "false" maybe I should use ClientScriptManager.RegisterForEventValidation? But I don't know how to use it.
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Oct 29, 2010
Is there a good way to test and debug these errors. I constantly get them emailed to me from my production site but I can not duplicate them. Below is the entire error.
User: jbrown
IP: 74.202.255.133
Session[STUser] = DAL.stUser
Session[PlaylistName] = Adult Contemporary Holiday Blend 2010 (vol. 2)
Session[PlaylistId] = 3865
Session[SES-FAN] = SessionFan
Session[fullPreview] = yes
System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %>in a page. For security purposes, this feature verifies that arguments to postback or callback events
originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.
RegisterForEventValidation method in order to register the postback or callback data for validation. at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String
eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Exception of type 'System.Web.HttpUnhandledException' was thrown.
System.Web
at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean
includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at ASP.brandbrowse_aspx.ProcessRequest(HttpContext context) in c:WindowsMicrosoft.NETFramework64v2.0.50727Temporary
ASP.NET Files
oote6fbb3019956ec5aApp_Web_u-x9w715.8.cs:line 0 at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep
step, Boolean& completedSynchronously)
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Oct 12, 2010
i use cascading dropdown lists (in a user registration form) and when the user hits the submit button i get the error: "Invalid postback or callback argument" I've seen on the net that this is a problem dating back many years but still haven't found a solution to this. I've read about changing EnableEventValidation to false, but this poses a security risk.
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Oct 18, 2010
We were having occasional reports where the value of a set of DropDownBoxs in a GridView would be reset to the first value item in the list.
We finally tracked it down to a timing issue where a user would click Save before the page finished rendering/loading the data, and we are able to repro it on the production server but not locally because the page loads too quickly.
How would we go about detecting this on the server side to know the data returned is invalid or otherwise stop from setting data that the user didn't set?
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Aug 24, 2010
How can I catch this exception? I do not want it to stop my page execution. Can/Should I do that?
Server Error in '/' Application.
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.]
System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) +8625033
System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument) +72
System.Web.UI.WebControls.DropDownList.LoadPostData(String postDataKey, NameValueCollection postCollection) +53
System.Web.UI.WebControls.DropDownList.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) +13
System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) +346
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1743
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May 14, 2010
I have a web page that contains a number of update panels containing collapsed panels, some of which have data loaded on expand.To achieve this I have added a java script function:
function pageLoad() {
$find('cpe1').add_expandComplete(postBack1);
$find('cpe2').add_expandComplete(postBack2); [code]....
With the PostBack1 - 4 functions clicking hidden buttons that are triggers for the update panels (and inside the panels) that then run the loads. In some of these it binds a grid to an object datasource in others it just fils in some screen elements from a database table.
Update panel format for the grids:
<asp:UpdatePanel ID="up1" runat="server" UpdateMode="Conditional" RenderMode="Inline">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnUpdate1" EventName="Click" />[code].....
What I am finding is that the ones which load screen elements work perfectly. The FIRST one of the two grid binding ones also works perfectly, and it doesn't matter which I open first (both up1 and up2 will work if they are first and correctly bind the grid). However if I open either of the grid binding panels then attempt to open any other panel I receive:
"Sys.WebForms.PageRequestManagerServerErrorException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation."
However this only occurs if I hit either up1 or up2, I can open and close up3 and up4 as often as I like with no error as long as I do not open up1 or up2.Turning off Page event validation does solve the problem, but I am concerned about page vulnerability.
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Aug 20, 2010
I have a Cascading drop down list that is working fine to load the correct lists however I would like to have the last one initiate a query and display a datagrid on the same page containing the results of the query. Without Ajax involved this seems rather easy by using autopostback on the drop downs. If I could do it through Ajax that would be great but I can settle with having the page to reload to display the data. Right now I'm not sure how to do either. I enabled autopostback on the last drop down and wrote a method for it but I get an error at runtime saying:
Invalid postback or callback argument
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Aug 26, 2010
I am getting this wired error when I try to add another control on my user control. Is there a limitaion on how many controls we can have on a single user control?
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