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Saturday, March 1, 2014

Difference between Abstract Class and Interface in C#.Net:




In this article we will discuss about what is the difference between abstract class and interface in C#.Net.

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Abstract class:
- This is a special type of class that cannot be instantiated.

- Abstract class is a class which contains both abstract method and non abstract method.

- Abstract class have method definition and implementation.

- It can contain acessmodifiers for function properties.

- It doesn't support multiple inheritance, it can have constructor and destructor.

- We can declare a class abstract by using keyword abstract.


Interface:
-An interface is not a class. It is an entity that is defined by the word Interface.

-It has only signature or in other words just the definition of the methods without the body.

-Interface has only signature.

-All the methods are public,it doesn't have access modifiers controls.

-All the methods are abstract.

-It doesn't have constructor and destructor fields.

-It supports multiple inheritance in the object oriented language.

-A class may inherits several interfaces.



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