Example 1. Simple definition within XAML. Use the toggle to display the message. Example 2. View source to see message defined in long hand, allowing action button content to be set. Example 3. In many real world scenario, notification display must deal with threading, queuing, and potentially heavy usage. A MessageQueue can be set to handle much of this for you, gicing the following benefits: Hello World Send Example 4. Illustrates queueing (including discarding of duplicates), and handling of commands. Action a notification to see a System.Trace response.. Send Example 5. Illustrates a full width Snackbar. Example 6. Action button colour variations.