thank you. But what is happening internally when new or override is used?

Is there any virtual table as in c++.?

Hi there..

Actually override and new modifiers performs the same task, let's you define another definition in a derived class. There are miniature differences which comes handy in some times. Just read through below resources which would be more useful to you rather than my lengthy explanations.

http://msdn.microsoft.com/en-us/library/ms173153%28VS.80%29.aspx
http://www.csharphelp.com/2005/11/new-modifiers-in-c/