使用MS BotFramework中的PromptDialog开始对话

1 回答

• 2

  在Direct Line通道bot中不记得对话框状态，当用户选择其中一个对话框选项并发送他的第一个真实消息时，root对话框将再次从PromptDialog.Choice启动，因此它会出现两次 .

  我可以在我身边重现同样的问题，并且我发现当机器人和用户都被添加到对话中时将执行 ConversationUpdate 处理程序 .

  要解决此问题，可以参考以下代码示例 .

  In MessagesController:

  else if (message.Type == ActivityTypes.ConversationUpdate)
  {
      // Handle conversation state changes, like members being added and removed
      // Use Activity.MembersAdded and Activity.MembersRemoved and Activity.Action for info
      // Not available in all channels
  
      if (update.MembersAdded != null && update.MembersAdded.Any())
      {
          foreach (var newMember in update.MembersAdded)
          {
              if (newMember.Name == "{your_botid_here}")
              {
                  IMessageActivity greetingMessage = Activity.CreateMessageActivity();
  
                  //...
                  //your code logic
                  //...
  
                  IMessageActivity dialogEntryMessage = Activity.CreateMessageActivity();
                  dialogEntryMessage.Recipient = message.Recipient;//to bot
                  dialogEntryMessage.From = message.From;//from user
                  dialogEntryMessage.Conversation = message.Conversation;
                  dialogEntryMessage.Text = "show choices";
                  dialogEntryMessage.Locale = "en-us";
                  dialogEntryMessage.ChannelId = message.ChannelId;
                  dialogEntryMessage.ServiceUrl = message.ServiceUrl;
                  dialogEntryMessage.Id = System.Guid.NewGuid().ToString();
                  dialogEntryMessage.ReplyToId = greetingMessage.Id;
  
                  await Conversation.SendAsync(dialogEntryMessage, () => new Dialogs.RootDialog());
              }
          }
      }
  }
  

  In RootDialog:

  private async Task MessageReceivedAsync(IDialogContext context, IAwaitable<object> result)
  {
      var activity = await result as Activity;
  
      var mes = activity.Text.ToLower();
  
      string[] choices = new string[] { "choice 1", "choice 2" };
  
      if (Array.IndexOf(choices, mes) > -1)
      {
          await context.PostAsync($"You selected {mes}");
      }
      else if(mes == "show choices")
      {
          PromptDialog.Choice(context, resumeAfterPrompt, choices, "please choose an option.");
      }
      else
      {
          await context.PostAsync($"You sent {activity.Text} which was {length} characters.");
          context.Wait(MessageReceivedAsync);
      }
  
  }
  
  private async Task resumeAfterPrompt(IDialogContext context, IAwaitable<string> result)
  {
      string choice = await result;
  
      await context.PostAsync($"You selected {choice}");
  }
  

  Test result:

  

  回复于 2024-04-26T06:52:15+08:00