Advanced Commands
Now that you've seen the basics of commands, it's worth considering a few more sophisticated implementations. In the following sections, you'll learn how to use your own commands, treat the same command differently depending on the target, and use command parameters. You'll also consider how you can support a basic undo feature.
Custom Commands
As well stocked as the five command classes (ApplicationCommands, NavigationCommands, EditingCommands, ComponentCommands, and MediaCommands) are, they obviously can't provide everything your application might need. Fortunately, it's easy to define your own custom commands. All you need to do is instantiate a new RoutedUICommand object.
The RoutedUICommand class provides several constructors. ...
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