Bot Framework，提示選擇對象列表

Question

我想在用戶搜索窗口小部件後詢問用戶想要使用哪個窗口小部件，這會生成一個窗口小部件列表。我希望能夠點擊小部件的名稱，然後獲取小部件的URL。當我運行下面的代碼時，我得到了invalid need: expected Call, have Poll。

public async Task SelectAfterSearch(IDialogContext context, List<Widget> widgetlist) 
{ 
    PromptDialog.Choice(context, this.OnWidgetSelected, GetListOfWidgets("list"), "Which one do you want more information about?", "Not a valid option", 3); 
} 

public async Task OnWidgetSelected(IDialogContext context, IAwaitable<Widget> result) 
{ 
    var chosen = await result; 
    await context.PostAsync($"You have chosen {chosen.Name}: {chosen.Url}"); 
} 

Answer 1

你缺少一個context.Wait你OnWidgetSelected方法結束。

public async Task OnWidgetSelected(IDialogContext context, IAwaitable<Widget> result) 
{ 
    var chosen = await result; 
    await context.PostAsync($"You have chosen {chosen.Name}: {chosen.Url}"); 
    context.Wait(...) // => usually you Wait on the MessageReceived method. 
}