// create properties to represent program features
public static class Commands
{
    public static readonly RoutedCommand Foo = new RoutedCommand();
}
 
// in WPF/XAML
// reference your project namespace or the namespace containing the Commands class
<Window ...xmlns:local="clr-namespace:RoutedCommandDemo">
 
// setup command bindings
<Window.CommandBindings>
    <CommandBinding Command="{x:Static local:Commands.Foo}"
                    CanExecute="Foo_CanExecute"
                    Executed="Foo_Executed" />
</Window.CommandBindings>
 
// setup keyboard short cuts
<Window.InputBindings>
    <KeyBinding Command="{x:Static local:Commands.Foo}"
                Key="F"
                Modifiers="Ctrl" />
</Window.InputBindings>
 
// have your button reference those commands as defined in command bindings
<Button Command="{x:Static local:Commands.Foo}" ... />
 
// in code behind ... have events to handle commands/routed commands
void Foo_CanExecute(object sender, CanExecuteRoutedEventArgs e) { ... }
void Foo_Executed(object sender, ExecutedRoutedEventArgs e) { ... }