Cookies in ASP
A cookie is a small piece of information that a server can store in a Web
browser. Each time the browser requests a page from the server it sends the
relevant cookies too. ASP allows you to create and retrieve cookies easily.
Creating a Cookie
Cookies are created using
Response.Cookies. Cookies are sent in
the headers of the response so you should always set cookies before
sending the body of the response.
Example Cookie Creation
Response.Cookies("username") = "earthskater"
Response.Cookies("username").Expires = Date + 365
In the example above a cookie named
"username" was created with
a value of
"earthskater". Then the expiry date was set using the
Expires property. The cookie was set to expire 1 year from the days date. When the cookie expires it is deleted from the user's Web
To retrieve cookies we use
Example Cookie Retrieval
username = Request.Cookies("username")
response.write("Username: " & username)
This code retrieves the value of the cookie named
prints it in the browser. Note that cookies can be retrieved anywhere in the
code, unlike creating them which has to be done before anything is written to
the body of the response.
Cookies with Multiple Values
Cookies can also contain multiple values, using something called keys.
Take a look at this example.
Response.Cookies("user")("realname") = "John Doe"
Response.Cookies("user")("username") = "johnny55"
Response.Cookies("user")("age") = "55"
This is fairly straightforward to understand. Retrieving the cookies is very
realname = Response.Cookies("user")("realname")
username = Response.Cookies("user")("username")
age = Response.Cookies("user")("age")
Listing All Cookies
You may want to list all the cookies available in a particular request. Here
is how to do it.
For Each x in Request.Cookies
If Request.Cookies(x).HasKeys Then
For Each y in Request.Cookies(x)
Response.Write(x & ":" & y & "=" & Request.Cookies(x)(y))
Response.Write(x & "=" & Request.Cookies(x) & "<br />")
HasKeys property is used to check if a cookie has any keys.
The Cookies Collection
Here is a quick reference table of properties that you can set on cookies in
||Tells the browser only to send the cookie to the specified domain.
||Tells the browser to delete the cookie at the specified date. If no date
is specified, the cookie expires when the browser is closed.
||Determines whether the cookie has any keys.
||Tells the browser only to send the cookie to the specified path.
||If set to
True then the cookie will only be sent to the
server when using a secure connection. This defaults to