如何使用turnContext响应Waterfalldialogs工作？(how does turn

我有我的TaskOnTurn-方法的问题。当我启动机器人，它发出的欢迎消息和一个新的对话框启动，因为的，

if(!turnContext.Responded)

现在，而在IM对话再次一跃而起，最后if语句和一个新的对话已经开始，而IM于一体。请问该怎么做！turnContext.Responded工作？然后我试图启动的对话框中，如果（turnContext.Activity.MembersAdded！= NULL）下等待SendWecomeMessage。没有工作。然后，它发送1个欢迎消息，然后开始2个对话框。这也让我感到困惑。

public async Task OnTurnAsync(ITurnContext turnContext, CancellationToken cancellationToken = default(CancellationToken))
        {
            if (turnContext == null)
            {
                throw new ArgumentNullException(nameof(turnContext));
            }

            var activity = turnContext.Activity;
            var dc = await _dialogs.CreateContextAsync(turnContext, cancellationToken);
            if (turnContext.Activity.Type == ActivityTypes.Message)
            {
                await dc.ContinueDialogAsync(cancellationToken);
            }
            else if (turnContext.Activity.Type == ActivityTypes.ConversationUpdate)
            {
                if (turnContext.Activity.MembersAdded != null)
                {
                    await SendWelcomeMessageAsync(turnContext, cancellationToken);
                }
            }
            else
            {
                await turnContext.SendActivityAsync($"{turnContext.Activity.Type} event detected", cancellationToken: cancellationToken);
            }

            if (!turnContext.Responded)
            {
                await dc.BeginDialogAsync(ReservationDialog, cancellationToken);
            }
        }

TurnContext.Responded指示至少一个响应是否被用于当前送转。 OnTurnAsync每一步瀑布之间的火灾，因此，如果ReservationDialog有一个提示，一旦用户应答提示， OnTurnAsync被解雇，因为机器人已经不是StepContext内得到回复， TurnContext.Responded是false 。这就是为什么你在另一个对话框中间得到一个对话框。

有不同的路线，你可以去内的很多OnTurnAsync 。我绝对推荐检查出一些样品，看看他们是如何做到的事情-他们大多是相当良好注释。

public async Task OnTurnAsync(ITurnContext turnContext, CancellationToken cancellationToken = default(CancellationToken))
{
    var activity = turnContext.Activity;

    var dc = await Dialogs.CreateContextAsync(turnContext);

    // Execute on incoming messages
    if (activity.Type == ActivityTypes.Message)
    {
        if (string.IsNullOrWhiteSpace(activity.Text) && activity.Value != null)
        {
            activity.Text = JsonConvert.SerializeObject(activity.Value);
        }
    }

    var dialogResult = await dc.ContinueDialogAsync();

    // Execute based on different situations within a Dialog. See BasicBot for examples:
    // https://github.com/Microsoft/BotBuilder-Samples/blob/master/samples/csharp_dotnetcore/13.basic-bot/BasicBot.cs#L112
    if (!dc.Context.Responded)
    {
        switch (dialogResult.Status)
        {
            case DialogTurnStatus.Empty:
            case DialogTurnStatus.Waiting:
                break;
            case DialogTurnStatus.Complete:
                await dc.EndDialogAsync();
                break;
            default:
                await dc.CancelAllDialogsAsync();
                break;

        }
    }

    // Here's where we show welcome messages
    if (activity.Type == ActivityTypes.ConversationUpdate)
    {
        if (activity.MembersAdded != null)
        {
            foreach (var member in activity.MembersAdded)
            {
                // This makes sure the new user isn't the bot. It's a little different from some of the samples
                // because code has changed in the SDK and emulator
                if (member.Name != "Bot" && member.Name != null)
                {
                    await SendWelcomeMessageAsync(turnContext, cancellationToken);
                    await dc.BeginDialogAsync(ReservationDialog, cancellationToken);
                }
            }
        }
    }

    // Be sure you're saving ConversationState at the end since DialogContext derives from it
    await _conversationState.SaveChangesAsync(turnContext);
}