WPFやXamarinのICommandを改めて整理する　VM①

MainWindowViewModel.cs

        public DelegateCommand ExecuteCommand { get; }

        public MainWindowViewModel()
        {
            ExecuteCommand = 
                new DelegateCommand(
                    () =>　Result = "登録されました",
                    CanExecute);
        }

        private bool CanExecute()
        {
            return !string.IsNullOrWhiteSpace(Name);
        }