The Decorator Pattern & Extension Methods in c#

Question

Before going to describe my problem first,I would like to define definitions of Decorator and Extension method Decorator

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Answer 1

Extension method a Decorator pattern or a Visitor pattern? After reading I would say its more akin to the Visitor.

Quoting the greatness that is wikipedia, the pedia that never has errors :P

In object-oriented programming and software engineering, the visitor design pattern is a way of separating an algorithm from an object structure it operates on. A practical result of this separation is the ability to add new operations to existing object structures without modifying those structures. It is one way to easily follow the open/closed principle. In essence, the visitor allows one to add new virtual functions to a family of classes without modifying the classes themselves; instead, one creates a visitor class that implements all of the appropriate specializations of the virtual function. The visitor takes the instance reference as input, and implements the goal through double dispatch.