generally you will use Enum in place of "Magic Numbers" or Constants.
For example if you had 3 statuses for a user and had them three statuses in the database like:
ID=>1 & Name=>Admin
ID=>2 & Name=>SuperUser
ID=>3 & Name=>User
You would hit the DB, and get back 1 (which is an admin). Now you would set User.UserType (Usertype is your enum) = Admin (Not 1). Then anywhere in your application you can just do:
If User.UserType = (Then intellisense will popup and tell you your options) - no need to remember what it is
and it's reliable because it now knows what it can be and you can just select the options from a list.