[Tom Tom]

Cookies are little pieces of data stored on the client. With each Web request the cookies are sent back to the server and accessible from ASP.NET code, which allows you to perform tasks such as site personalization.(IIS actually use cookies to help manage sessions.) For example, the following lines of code send a Zipcode cookie back to the user:

Dim ckZip As new HttpCookie("Zipcode")
ckZip.Value = "28138"
ckZip.Expires = DateTime.Now.AddDays(30)
Response.Cookies.Add(ckZip)

When the user access the site again, the Zipcode cookie will be sent to the server, allowing it to display the weather or other ZIP Code-related information automatically. The Expires property of the cookie instructs the browser to throw it away after 30 days.

If you are curious how and where cookies are stored, look in the Temporary Internet Files folder. To view these files from Internet Explorer, choose Internet Option from the tool menu and click View Files. Drag one of the cookie files (begins with the word cookie) to the desktop and then open it in a text editor.

Because cookies are stored as plain text, I would recommend the following precautions when using cookies to keep track of a user's identity.

Use a random number (that is a GUID)rather then any actual key value from the database.

If your Web site has a list of users, do not display their random number in URL's.

Without taking the previous precautions, a user could edit his cookie file and impersonate another user.

[Djzzero]

Thanks, Ive been wondering how to do the code to save cookies to a client :). Thanks very much!