Extended Methods

Question

4.60/5 (6 votes)

See more:

.NET3.0

.NET3.5

Is extension method = static method returning strongly typed variables or collections?

i read one entry about it saying -- "this" keyword as a static method param tells The compiler that this particular Extension Method should be added to objects of type default .net class.

SO do we need to add "this" keyword for creating extended method or every static method in static class can be called extension method?

Posted 27-Feb-09 20:12pm

Member 3981366

Add a Solution

3 solutions

Solution 2

Yes.

When you use static methods within static class and use "this" keyword then this method known as Extended methods.

Posted 20-Dec-09 18:58pm

MonaPatel

Solution 3

To specify an extension method you insert the keyword this before the
first method parameter, which indicates to the compiler the type you
want to extend. Note that the method and its class must be static.

Posted 25-Feb-10 17:31pm

Palash Biswas

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

ABitSmart · Accepted Answer · 2009-02-27T21:00:00

From here[^],
"Extension methods are a special kind of static method, but they are called as if they were instance methods on the extended type."

Member 3981366 wrote:
returning strongly typed variables or collections

Sorry, I don't understand what you mean.

Member 3981366 wrote:
do we need to add "this" keyword for creating extended method

Yes, if you want it to be used as an Extension method i.e. the compiler automatically glueing the code for linking the static extension method to the instance object

Member 3981366 wrote:
every static method in static class can be called extension method

No, since you cannnot use static methods with instance object. There lies the major inclination of extension methods.