Actionfilter equivalent for methods

Question

Is there an ActionFilter equivalent for methods in c# itself?

In controllers you can have a custom filter which does a task OnActionExecuted and OnActionExecuting but i'd like to do a similar thing on methods inside a class as well.

So i'd like to do:

[MyMethodFilter]
public static string Convert(string source)
{
     //DO STUFF
     //RETURN A STRING
}

The IActionFilter interface is part of System.Web.Mvc

Answer 1

You are looking for aspect-oriented programming. There are some ways to do it in C#:

1. Proxy-class derived from your class. It is easy to do with DI-container: How to set up an optional method interception with Ninject?

2. MSIL Rewriting. Much more complicated technology. PostSharp is a good library to start with it: http://doc.postsharp.net/method-interception

So, there is no a ready-to-use ActionFilter equivalent. Howewer you can achieve similar functionality.