It’s often necessary to “inform” other areas of an application of changes that have occurred. This can be achieved through Messaging. In the previous tutorial we created a Settings page and made the TranslationDirection Configurable. It would be nice if the Main View Model knew about our new Translation Direction setting, let’s look at how we can achieve this.
By the end of this tutorial we should have implemented a SettingsChangedMessage, subscribed to it from our MainViewModel and Published it from our SettingsViewModel. Continue reading “Universal App Tutorials Part 15 : MVVM Light Messaging”