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ASP.net modify cookie created in javascript

Hi

I am using a cookie in javascript like this.....answer to previous question.
var intX = 123;
document.cookie = "xPos=!~" + intX + "~!";
on a page say Page1.aspx so that postbacks on same page remember value

However when clicking a button on e.g. Page2.aspx which links to Page1.aspx I want to delete the cookie before going to Page1.aspx (so it isn't there anymore and a check to
if(strCook.indexOf("!~")!=0)
is false,
instead of true as it is after doing document.cookie = "xPos=!~" + intX + "~!";

Never used cookies before so this is all new.

Thanks in advance for help.

ASKER CERTIFIED SOLUTION

VoteyDisciple

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rwallacej

ASKER

Hi,

Thanks for link/code.
I tried this in advance of posting question.
Response.Cookies("xPos").Expires = DateTime.Now.AddYears(-30)

Now I tried
Dim c As System.Web.HttpCookie = Response.Cookies("xPos")
to check existing but the value of it is blank and data #12:00:00 AM#

Despite setting
Response.Cookies("xPos").Expires = DateTime.Now.AddYears(-30)

the Page1.aspx still thinks it is there, and has value it had as if it wasn't deleted

So something isn't working right still - cookie still exists on page loading up

Anurag Thakur

if i understand your problem correctly you want to delete the cookie when the page loads because as the page is loading for the first time the xposition is not there

if i am correct then in you page load you can add the following code

if (IsPostBack == false)
Response.Cookies.Remove("Cookie Name");

and you are setting the cookie from your javascript code

rwallacej

ASKER

ragi0017,

you are correct.
the first time the page is loaded, I do not want xPos to be there; I do not want to remember xPos from previous visits to this page, only during postbacks

the cookie is set in javascript when user uses a scrollbar to remember the X position of scrollbar after postback.

I have found that even with
if (IsPostBack == false)
Response.Cookies.Remove("Cookie Name");

set, xPos is still remembered.

I also tried
Response.Cookies("xPos").Value = 0
to set the value to zero but it still retains the value set in javascript / the value isn't deleted (so the horizontal navigator always scrolls to xPos)

not sure what's happening

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Anurag Thakur

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rwallacej

ASKER

cheers for help