Error - The state information is invalid for this page and might be corrupted

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Hi,

In my application, i am populating city dropdownlist on state selection through AJAX.

AJAX return dropdown list control and add it to page.

Now if i click on button on same page, it gives me error on Chrome -

The state information is invalid for this page and might be corrupted.

It seems like viewstate issue
In firefox , it works fine

Can anyone guide me?

Posted 6-May-14 20:52pm

Prajakta V C

Updated 7-May-14 19:51pm

v3

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DamithSL · Answer 1 · 2014-05-06T20:59:00

Solution 1

you need something like this?[^]
Then fallow
Using CascadingDropDown with a Database[^]
OR
Steps to create a cascading drop-down list by using the Microsoft ASP.NET AJAX framework[^]

Posted 6-May-14 20:59pm

DamithSL

Comments

Laiju k 7-May-14 3:14am

does cascading work on ASP.Net 2.0

DamithSL 7-May-14 3:18am

If you want to incorporate ASP.NET AJAX features in the .NET Framework 2.0, you must have ASP.NET 2.0 AJAX Extensions 1.0 installed

[no name] 7-May-14 3:31am

ok. thank you for reply. means in any way i have to create web service?

[no name] 7-May-14 3:37am

Use ajax it is the best method....

[no name] 7-May-14 5:21am

but in ajax, we get response in string format. how can we populate dropdown list?

[no name] 7-May-14 5:26am

sample code added....in soln...

Kan07 · Answer 2 · 2014-05-06T23:32:00

this is only a sample..........

PHP

function setAutoCompleteProc() {
        $nc2("#txtitem").autocomplete({
            minLength: 2,
            source: "../Forms/getdataService.aspx?Id=0; + Math.random(),
            focus: function (event, ui) {
                $nc2(this).val(ui.item.NAME);
                return false;
            },
            select: function (event, ui) {
                $nc2(this).val(ui.item.NAME);
                return false;
            }
        });

here in getdataService.aspx a function retrieves dropdown items , onfocus of that text box call the js function

Dilan Shaminda · Answer 3 · 2014-05-07T01:10:00

Solution 3

Hi,
You can do the same thing without using CascadingDropDown.

Check this tutorial :
https://www.youtube.com/watch?v=9g2h0RFL5sA[^]

Posted 7-May-14 1:10am

Dilan Shaminda

Comments

[no name] 8-May-14 1:43am

ok. thank you for the link.
I have done that with ajax but now i am getting error on button click -
The state information is invalid for this page and might be corrupted.

Dilan Shaminda 8-May-14 3:48am

when you get that error? when OnSelectedIndexChanged of dropdwonlist fires? And i was really confused, because the question topic and details has been modified..When someone came here to find some answers by looking at the new topic they would be confused too.I don't think that changing question for same thread is nice...

[no name] 8-May-14 6:54am

ok sorry for that. from next time i will post new question. i get error on button click.<br>
i mean after state and city selection, i click asp.net button.
on click , it displays error.

In firefox, it does not give error but is hide ajax returned control

Dilan Shaminda 8-May-14 8:40am

set page parameter EnableEventValidation to false.
<%@ Page EnableEventValidation="false"

http://w3ka.blogspot.com/2008/04/ajax-error-messagethe-state-information.html