WPF Commands, How to declare Application level commands?

Question

I\'m interested in creating commands that are available from anywhere in my WPF application.

I\'d like them to work in the same way as Cut, Copy

Answer 1

I did not like the complexity of the other solutions, but after a few hours of research I found out it is really simple.

First setup your command as you usually do, but add a static property for WPF so that it can obtain an instance of your command.

class MyCommand : ICommand
{
    // Singleton for the simple cases, may be replaced with your own factory     
    public static ICommand Instance { get; } = new MyCommand();

    public bool CanExecute(object parameter)
    {
        return true; // TODO: Implement
    }

    public event EventHandler CanExecuteChanged;

    public void Execute(object parameter)
    {
        // TODO: Implement       
    }   
}

Add a reference to the namespace of your command in your XAML (last line), like this:

Then just reference your static property in your XAML like this: