Question

A common scenerio we are running into with our current application is where we need to route and event through several classes.

Here is a sample class heirarchy.

ActionManager
MainWindow
PresentationManager
MenuManager
Menu
MenuButton

The Menu subscribes to the click event of a MenuButton. It then creates a CustomAction object and raises an event that is subscribed to MenuManager. In the MenuManager event handler it in turn raises an event that is subscribed to by the PresentationManager, and so on.

Here is a sample of what is implemented for the PresentationManager:

    void MenuManager_ActionGenerated(object sender, CustomActionEventArgs e)
    {
          if (ActionGenerated != null)
                ActionGenerated(sender, e);
    }

I was hoping that there would be a way that I could raise the event at the Menu level and receive it at the ActionManager level.

Is it bad practise what I am currently doing?

Answer 1

You can also look into Event Aggregator. A good example can be found at codeproject: Event Aggregator with Specialized Listeners