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New Message on BDOTNET
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From: KartikKrish
Message 3 in Discussion
use
interface when you want to implement the details independently in
individual classes.Use abstract class when u want to implement a base
functionality in an abstract class and then u want to override virtual methods
in your derived classes.One advantage is that basic validation can be done by
the abstract class
Eg-say
Manager dervies from Employee
when u
say
Manager manager = new Manager(null); (where the parameter is the
name)
u can
then specify in your manager class as
public
Manager{
public
Manager(string name) : base(name)
{
}
}
public
class Employee
{
public
Employee(string name)
{
if(name == null !! Trim(name.Length) ==0)
{
throw Exception("Name cant be null");
}
}
From
this u can see that this can be used for all child classes deriving from
Emplyee
Further,any new methods added to the base class are inherited for
free(public and protected methods), with NO recompilation reqd. It is clear
that
in an interface this is required
Most
importantly,from a modeling viewpoint
abstract class represents an is-a relationship (generalization) where as
an interface represents a realization.
Karthik
-----Original Message-----
From: kals_j
[mailto:[EMAIL PROTECTED]
Sent: Monday, December 20, 2004 12:24
PM
To: BDOTNET
Subject: Interface and
Abstract
New Message on BDOTNET
Interface
and Abstract
Reply
Reply to Sender Recommend
Message 1 in
Discussion
From: kals_j
Anyone tell me the best scenario to go for Interface and
Abstract instead of going normal class...?
Kals
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