C# Beginner to advanced - Lesson 49 - Extension Methods

Extension Methods

Extension methods are a new feature in C# 3.0.

An extension method enables us to add methods to existing types without creating a new derived type, recompiling, or modify the original types.

An Extension Method is a static method to the existing static class

We call an extension method in the same general way, there is no difference in calling.

Feature and Property of Extension Methods:

It is static method.

It must be located in a static class.

It uses this keyword as the first parameter.

It also shown by VS intellisense. When we press the dot (.) after a type instance, then it comes in VS intellisense.

You can give any name for the class that has an extension method but the class should be static .

If you create extension methods that have the same signature methods as the type you are extending, then the extension methods will never be called.

ankpro

ankpro training

Asp.net MVC

C#

C sharp

Bangalore

Rajajinagar

Selenium

Coded UI

Mobile automation testing

Mobile testing

JQuery

JavaScript

.Net

Components of the .Net framework

Hello World

Literal

Keywords

Variable

Data types

Operators

Branching

Loops

Arrays

ArrayList

Strings

String Builder

Structures

Enums

Functions

Classes

Inheritance

Polymorphism

Properties

Indexers

Events

Nested Classes

Delegates

Anonymous methods

Labda expressions

Abstract classes

Exception Handling

Linq

Interfaces

Extension methods

Anonymous types

Generics

Collections

Garbage Collection

Reflection

Attributes

Input and output statements

Type casting

Partial Methods

Partial Classes

Boxing and Unboxing

Var vs Dynamic vs Object