Crea el ICommand para que se pueda usar en un SetCommand
//Cuando se pulsa el botón
public void Button1Click()
{
System.Console.WriteLine("Hola");
}
// ICommand creation -------------------------------------------
private RelayCommand _button1ClickCommand;
public RelayCommand Button1ClickCommand
{
get => _button1ClickCommand
?? (_button1ClickCommand = new RelayCommand(Button1Click));
}