How to set the lifetime for a cookie?

Suppose you want to set the lifetime for a cookie in hours, then

CookieName.Expires = DateTime.Now.AddHours(5);

With the above code, the cookie will expire after exactly 5 hours.


Suppose you want to set the lifetime for a cookie in days, then

CookieName.Expires = DateTime.Now.AddDays(3);

With the above code, the cookie will expire after exactly 3 days.