c# - Can I use the decorator pattern to wrap a method body?

Question

I have a bunch of methods with varying signatures. These methods interact with a fragile data connection, so we often use a helper class to perform retries/reconnects, etc. Like so:

MyHelper.PerformCall( () => { doStuffWithData(parameters...) });

And this works fine, but it can make the code a little cluttery. What I would prefer to do is decorate the methods that interact with the data connection like so:

[InteractsWithData]
protected string doStuffWithData(parameters...)
{
     // do stuff...
}

And then essentially, whenever doStuffWithData is called, the body of that method would be passed in as an Action to MyHelper.PerformCall(). How do I do this?

Answer 1

So, I just went to a AOP session this weekend, and here's a way to do it with PostSharp:

[Serializable]
public class MyAOPThing : MethodInterceptionAspect
{
    public override void OnInvoke(MethodInterceptionArgs args)
    {
        Console.WriteLine("OnInvoke! before");
        args.Proceed();
        Console.WriteLine("OnInvoke! after");
    }
}

And then decorate methods with [MyAOPThing]. Easy!