When Do I Use Cookies In Asp.net?

A cookie is a little text file which the browser creates and is stored on the client's machine by the web browser software. Cookie is one or more pieces of information stored in the form of text strings. The web server sends you a cookie and the browser stores it. A cookie commonly serves to store information about the user and the preferences or choices the user makes.

Making cookies with ASP.NET is a simple process. The System.Web supplies a class called HttpCookie to create cookies. Here is the basic code for writing a cooking in ASP.net using System.Web
Response.Cookies"BackgroundColor"].Value = "Red"
To read the cookie back, the code is:
(Request.Cookies["BackgroundColor"].Value)

Websites which are recommended for knowing how exactly cookies are added in Asp.net are
www.startvbdotnet.com
www.codetoad.com

If you want to get your data from your system then you need to go for cookies