AspectExample.cs

static void Main (string[] args)
{
  Func<Func<string>, Func<string>> wrap = fn => fn
    .Before(() => Console.WriteLine("I'm happening early on."))
    .Success(r => Console.WriteLine("Successfully obtained: " + r))
    .Before(() => Console.WriteLine("When do I occur???"))
    .After(r => Console.WriteLine("What did I get? " + r));

  var m1 = wrap(() => { 
    Console.WriteLine("Executing m1..."); 
    return "Hello Kiczales!";
  });

  var m2 = wrap(() => { 
    Console.WriteLine("Executing m2..."); 
    throw new Exception("Boom"); 
  });

  Call("m1", m1); 
  Call("m2", m2); 
}

static void Call(string name, Func<string> m) {
  Console.WriteLine(name);
  try {
    Console.WriteLine(name + " returned: " + m());
  }
  catch (Exception ex) {
    Console.WriteLine("Exception in {0}: {1}", name, ex.Message);
  }			
  Console.WriteLine();
}