Azure Bot Framework，QnA Maker API，如何在QnA对话中获取查询文本

Question

在QnA Maker API中，当找不到结果时，它会返回一些默认消息，或者我们可以更改该消息，但是我想运行一个函数/方法当没有结果来源。以下是代码。

public QnaDialog(): base(
     new QnAMakerService(new QnAMakerAttribute(ConfigurationManager.AppSettings["QnaSubscriptionKey"], 
     ConfigurationManager.AppSettings["QnaKnowledgebaseId"], "Hmm, I wasn't able to find any relevant content. Can you try asking in a different way? or try with typing help.", 0.5))) 
    { 
     //this is what i want to call, this is working but **i am not able to get query text here** 
     SendEmail email = new SendEmail(); 
     email.SendEmailtoAdmin("Query_Text", "Email ID"); 
    } 

Answer 1

，看一下在GitHub上QnaMakerDialog实施here。

你会看到你有几个选项，更容易的是覆盖在Qna搜索之后调用的DefaultWaitNextMessageAsync方法。

protected virtual async Task DefaultWaitNextMessageAsync(IDialogContext context, IMessageActivity message, QnAMakerResults result) 
    { 
     if (result.Answers.Count == 0) 
     { 
      // Here you have the query text in message.Text so: 
      SendEmail email = new SendEmail(); 
      email.SendEmailtoAdmin(message.Text, "Email ID"); 
     } 

     context.Done(true); 
    } 

请注意，如果你想避免派出约没有QNA发现的消息，你应该重写MessageReceivedAsync替代和改变块中的代码if (sendDefaultMessageAndWait)