cookies question

[William]

I'm new to ASPX. In my .aspx page I set multiple cookies from the session
variables to the "visitor" container:
dim cookie as HttpCookie
cookie=new HttpCookie("vis itor")
cookie.Values.A dd("cid", Session("sid"))
cookie.Values.A dd("ckeywords", Session("skeywo rds"))
cookie.Values.A dd("ccampaignno ",Session("scam paignno"))
cookie.Values.A dd("cadgroup",S ession("sadgrou p"))
cookie.Expires = Now.AddDays(365 )
response.append cookie(cookie)
But I need to set those cookies only if they do not exist on the computer.
If I surround the code with if-then statement that looks like this:

If Request.Cookies ("visitor") is Nothing Then

dim cookie ....
...
...
response.append ...

end if

the browser gives me an error.

My question is how do I check if the container "visitor" exists in cookies?

Thank you for your time.

[William]

Sorry -

Forgot to include the error:

If the cookies "visitor" do not exist the error is:

Exception Details: System.NullRefe renceException: Object reference not set
to an instance of an object.
"William" <da@northernit. net> wrote in message
news:Cc******** ********@twiste r.nyroc.rr.com. ..

I'm new to ASPX. In my .aspx page I set multiple cookies from the session
variables to the "visitor" container:
dim cookie as HttpCookie
cookie=new HttpCookie("vis itor")
cookie.Values.A dd("cid", Session("sid"))
cookie.Values.A dd("ckeywords", Session("skeywo rds"))
cookie.Values.A dd("ccampaignno ",Session("scam paignno"))
cookie.Values.A dd("cadgroup",S ession("sadgrou p"))
cookie.Expires = Now.AddDays(365 )
response.append cookie(cookie)
But I need to set those cookies only if they do not exist on the computer.
If I surround the code with if-then statement that looks like this:

If Request.Cookies ("visitor") is Nothing Then

dim cookie ....
...
...
response.append ...

end if

the browser gives me an error.

My question is how do I check if the container "visitor" exists in cookies?
Thank you for your time.

[Joerg Jooss]

William wrote:

I'm new to ASPX. In my .aspx page I set multiple cookies from the
session variables to the "visitor" container:
dim cookie as HttpCookie
cookie=new HttpCookie("vis itor")
cookie.Values.A dd("cid", Session("sid"))
cookie.Values.A dd("ckeywords", Session("skeywo rds"))
cookie.Values.A dd("ccampaignno ",Session("scam paignno"))
cookie.Values.A dd("cadgroup",S ession("sadgrou p"))
cookie.Expires = Now.AddDays(365 )
response.append cookie(cookie)
But I need to set those cookies only if they do not exist on the
computer. If I surround the code with if-then statement that looks
like this:

If Request.Cookies ("visitor") is Nothing Then

dim cookie ....
...
...
response.append ...

end if

the browser gives me an error.

My question is how do I check if the container "visitor" exists in
cookies?

That code is fine -- the error must be at a different line in your
code.

Note that is not a "browser error", but a simple coding error in your
code behind class, which you can easily debug...

Cheers,
--
http://www.joergjooss.de
mailto:ne****** **@joergjooss.d e