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?

Rajesh Singh · Answer

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.

Vivek Bansod · Answer

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

Nishant Mittal · Answer

Best example is ToString method . You can override the same according to your need.

Rajeesh Menoth · Answer

Hi, Ok, Check this reference : http://csharpindepth.com/Articles/General/Overloading.aspx

Vivek Bansod · Answer

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

Rajeesh Menoth · Answer

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

Nishant Mittal · Answer

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..

When to use Method overloading or method overriding

Answers (7)