How to use method parameter attributes

Question

I\'ve been struggling to find examples of how to write a custom attribute to validate method parameters, i.e., turn this form:

public void DoSomething(Client         


        

Answer 1

Attributes probably should be put on the method itself. When I was searching for the solution I found the following link and the way it uses interceptor seems even better http://www.codinginstinct.com/2008/05/argument-validation-using-attributes.html