When user visits a website for the first time a .txt file is sent to user's web browser and stored in a user system in a particular location, This text file is termed as cookie.
The main purpose of cookies is to know the user who visited websites. For instance, you can also save a small piece of information inside cookies.
You might have seen almost every website login page having one checkbox "Remember Me on this computer". These websites store the login information like username and password inside the cookies. So, next time when user logs in, the website retrieves the information from cookies and you will be logged in automatically.
1) Session Cookies: This cookie is stored temporary in the client machine. That means, when user closes the browser this session will be deleted from the client machine. This cookie is also called transient cookies.
2)Persistent Cookies: Persistent cookies is stored on the client hard drive in a particular location until it is not expired. That means persistent cookies hold the information until its expiry date and time.
To assign the value into cookies
Like every Server side programming language ASP.NET also have Cookies class to deal with cookies.
We have stored the value into cookies now we will see how to retirve value from cookies
To retrive the value from Cookies
NOTE : You should not store any critical information into cookies, as its visible and stored into client machine.