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

You'll pass the param in the lambda to the command like so:

if (_aCommandWithAParameter == null)
{           
    _aCommandWithAParameter = new RelayCommand(               
        param => this.CommandWithAParameter(param)
        );        
}