When to use Method overloading or method overriding

Question

What is real time scenario where we must have to use Method overloading or method overriding and no other option? I mean when it is recommended to use these concepts of Polymorphism?

Answer 1

Hi

   Overloading: 

 int Area( int len, int height) // Area of rectangle

Ex: Let suppose you want to calculate area of all geometry like  square, rectangle, square etc.

Here method name is same for all geometry but signatures are different.

 

Overriding:

 Let suppose you want o use same method every where but only method 

definition will be different.

Ex: Result();

Here result is common method which will be implemented by all class with different definitions. 

Result will display different value for different classes. 

 

Answer 2

Thanks Guys...

This clears a doubt a bit. Please reply in case you have more info on this. 

 

Answer 3

Best example is ToString method .

 

You can override the same according to your need. 

Answer 4

Hi,

 

Ok, Check this reference :

 

http://csharpindepth.com/Articles/General/Overloading.aspx 

Answer 5

Thanks Nishant & Rajeesh,

 

I got it conceptually but looking for a strong scenario where we have to use overloading or overriding. Overlaoding is simple for that matter but desparately looking for overriding scenario

Answer 6

Hi,

 

Just check this Reference :

 

http://www.aspdotnet-suresh.com/2013/09/polymorphism-in-c-with-example-types-of-polymorphism.html

 

http://www.aspdotnet-suresh.com/2013/09/polymorphism-in-c-with-example-types-of-polymorphism.html 

Answer 7

Hi Vivek

 

When you want to provide your defination to the existing method, then you have to use Overriding and when you have to use same functionality with different no. of parameters you have to go for Overloading..