ReactivePropertyで2度押し防止

Rxのお勉強。もっと良い実装あったら教えてください。 public class MainVM { public readonly ObservableCollection<string> Messages = new ObservableCollection<string>(); public MainVM() { IsBusy = new ReactiveProperty<bool>(false); Input = new ReactiveProperty<string>(""); TestCommand = IsBusy.CombineLatest(Input, (busy, input)…</string></bool></string></string>