據(jù)此我認(rèn)為現(xiàn)在可以從子對(duì)話框調(diào)用父對(duì)話框。之前我不能這樣做，因?yàn)樗鼤?huì)導(dǎo)致堆棧溢出異常。我已經(jīng)更新到 SDK 4.3 有誰知道如何實(shí)施這些更改嗎？主對(duì)話框調(diào)用對(duì)話框 A。WaterfallStep[] waterfallSteps = new WaterfallStep[]     {        FirstStepAsync,        SecondStepAsync,        ThirdStepAsync,     };    AddDialog(new WaterfallDialog(InitialId, waterfallSteps));    AddDialog(new DialogA(DialogAId));  return await stepContext.BeginDialogAsync(DialogAId, cancellationToken: cancellationToken);Dialog A 調(diào)用 Dialog Achild    WaterfallStep[] waterfallSteps = new WaterfallStep[]     {        FirstStepAsync,        SecondStepAsync,        ThirdStepAsync,     };    AddDialog(new WaterfallDialog(InitialId, waterfallSteps));    AddDialog(new DialogAchild(DialogAchildId));   return await stepContext.BeginDialogAsync(DialogAchildId, cancellationToken: cancellationToken);Dialog Achild 調(diào)用MainDialog，但這會(huì)產(chǎn)生Stack 溢出異常。WaterfallStep[] waterfallSteps = new WaterfallStep[]     {        FirstStepAsync,        SecondStepAsync,        ThirdStepAsync,     };    AddDialog(new WaterfallDialog(InitialId, waterfallSteps));    AddDialog(new MainDialog(MainDialogId));  return await stepContext.BeginDialogAsync(MainDialogId, cancellationToken: cancellationToken);