Use of Virtual Keyword in defining the Class

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Hi all,

In some MVC Examples(Code First Approach), during defining the class for Databace, I found the statement like as
"Public Virtual <classname> Identifier{get;set;}", or "Public Virtual ICollection<classname> Identifier{get;set;}".

Can any one tell me the exact use of using such kind of statements with Virtual Keyword..

Example:http://gentlelogic.blogspot.in/2012/03/entity-framework-code-first-first.html

Thanks in advance...

Posted 4-May-12 23:36pm

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Sergey Alexandrovich Kryukov · Answer 1 · 2012-05-05T16:52:00

This is the very heart of OOP. One can say, if you don't understand it, you have no idea of OOP. It looks like you need to stop doing what you are doing and learn it, otherwise further programming with classes are pretty much useless.

Some material to get an idea:
http://en.wikipedia.org/wiki/Virtual_function[^],
http://en.wikipedia.org/wiki/Dynamic_dispatch[^],
http://en.wikipedia.org/wiki/Late_binding[^],
http://en.wikipedia.org/wiki/Object-oriented_programming[^].

—SA