Getting Invalid postback or callback argument error when linkbutton is clicked from gridview

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Hi,

When I click on the link in the gridview,I am getting this below error. please anybody can help me.

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

and my page goes like this

VB

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="PatientMapByFacility.aspx.cs" EnableEventValidation="false"
    MasterPageFile="~/Master_Pages/PhysicianMaster.Master" Inherits="CarePortalOnline.CareHIEUI.PatientMapByFacility" %>

When I set

C#

EnableEventValidation="false"

OnClick="lnkView_Click" event is not firing.

Posted 15-May-12 22:50pm

Ganga Patangi

Updated 16-May-12 11:50am

Wendelius

v6

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Code 89 16-May-12 6:04am

can you post your error

Ganga Patangi 16-May-12 6:10am

Previously I was getting below 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

When i set EnableEventValidation="false" nothing is happening. I mean no click event is firing...

3 solutions

Solution 1

1) First Check whether you write some HTML tags inside the Textbox that you are going to store it on DB.

Sol: set the EnableEventValidation="False" either place this on page Directive or put this on web.config file

2) Check whether you are going to bind the data to Gridview , dropdownlist or any server control you should place the binded code within the IsPostBack -- property on Page_Load

Posted 15-May-12 23:30pm

Code 89

Updated 16-May-12 11:51am

v4

Comments

Ganga Patangi 16-May-12 5:54am

Hi,

Already i have placed the code behind binding in page_load method. and set EnableEventValidation=false on page directive.

here my code goes....

Collapse | Copy Code

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GetAllPatientList();
}
}

protected void GetAllPatientList()
{
if (Session["FacilityID"] != null)
{
int facilityId = Convert.ToInt32(Session["FacilityID"]);
CareHIEBL objCareHIEBL = new CareHIEBL();
List objPatientDetailsBOList = objCareHIEBL.GetAllPatientsByFacility(facilityId);
grdPatientList.DataSource = objPatientDetailsBOList;
grdPatientList.DataBind();
}
}

click event is not firing...

priyanshbhaliya 16-Oct-13 14:26pm

http://www.softcodearticle.com/2012/11/asp-net-gridview-invalid-postback-or-callback-argument-error/

here is ur solution....

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AshishChaudha · Accepted Answer · 2012-05-16T18:56:00

Solution 3

VB

Dim btn As LinkButton = CType(sender, LinkButton)
       Dim g As GridViewRow = CType(btn.NamingContainer, GridViewRow)
       Dim rowindex As Int16 = g.RowIndex
       Dim hid As HiddenField
       hid = gvPatient.Rows(rowindex).Cells(0).FindControl("hidid")

       Dim lnkbtn As LinkButton
       lnkbtn = gvPatient.Rows(rowindex).Cells(3).FindControl("LinkButton1")
              
       GetAllPatientList()

try using this...onclick event of linkbutton in a gridview..I had already used this code and working fine..Change it in C# and use.

Posted 16-May-12 18:56pm

AshishChaudha

Comments

Ganga Patangi 17-May-12 2:50am

Thanks for ur post...

I have tried this one and its working fine in local system. but it is not working when it is deployed in server

protected void lnkView_Click(object sender, EventArgs e)
{
Session["ControlId"] = null;
Session["PatientName"] = null;
GridViewRow gvRow = (GridViewRow)(sender as Control).Parent.Parent;
Label lblId = (Label)gvRow.FindControl("lblId");
Label lblName = (Label)gvRow.FindControl("lblFirstname");
Label lblLastName = (Label)gvRow.FindControl("lblLastName");
Label facId = (Label)gvRow.FindControl("facId");
string PatientName = lblName.Text + " " + lblLastName.Text;
Session["PatientName"] = PatientName;
GetMappingpatientListByFacility(Convert.ToInt32(lblId.Text.Trim()),Convert.ToInt32(facId.Text.Trim()));
GetMappedpatientList(Convert.ToInt32(lblId.Text.Trim()));
Session["ControlId"] = lblId.Text.Trim();
Session["FacilityId"] = facId.Text.Trim();

}

ERR0R:(After deploying)

Runtime Error
Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.

Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customerrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customerrors> tag should then have its "mode" attribute set to "Off".



<configuration>
<system.web>
<customerrors mode="Off">

Notes: The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the application's <customerrors> configuration tag to point to a custom error page URL.



<configuration>
<system.web>
<customerrors mode="RemoteOnly" defaultredirect="mycustompage.htm">

Ganga Patangi 22-May-12 5:31am

Hey Ashish thanks... I got solution ....

AshishChaudha 23-May-12 4:31am

Hi ganga, atleast rate if you got the solution...thanks

AshishChaudha · Accepted Answer · 2012-05-16T20:59:00

Solution 4

Set

C#

<customerrors mode="Off" />

in web.config file

Posted 16-May-12 20:59pm

AshishChaudha

Comments

Ganga Patangi 17-May-12 4:39am

Thanku i got to know the exact error...

AshishChaudha 17-May-12 4:54am

no ratings ganga???

Code 89 17-May-12 5:09am

my 5!