Passing a parameter using RelayCommand defined in the ViewModel (from Josh Smith example)

Question

I would like to pass a parameter defined in the XAML (View) of my application to the ViewModel class by using the RelayCommand. I followed Josh Smith\'s excellent article o

Answer 1

I don't understand why you have the extra complexity of specifying the lambda in the first place. Why not just do this:

if (_aCommandWithAParameter == null)
{           
    _aCommandWithAParameter = new RelayCommand