WPF ViewModel Commands CanExecute issue

Question

I\'m having some difficulty with Context Menu commands on my View Model.

I\'m implementing the ICommand interface for each command within the View Model, then creati

Answer 1

To complete Will's answer, here's a "standard" implementation of the CanExecuteChanged event :

public event EventHandler CanExecuteChanged
{
    add { CommandManager.RequerySuggested += value; }
    remove { CommandManager.RequerySuggested -= value; }
}

(from Josh Smith's RelayCommand class)

By the way, you should probably consider using RelayCommand or DelegateCommand : you'll quickly get tired of creating new command classes for each and every command of you ViewModels...