Catel.MVVM.CommandManager.InvalidateCommands C# (CSharp) Method

        public void InvalidateCommands()
        {
            lock (_lockObject)
            {
                foreach (var commandName in _commands.Keys)
                {
                    var command = _commands[commandName];
                    if (command != null)
                    {
                        command.RaiseCanExecuteChanged();
                    }
                }
            }
        }