问如何自动训练知识库(QnAMaker服务)？

EN

if ((bool)stepContext.Result)
        {
            await stepContext.Context.SendActivityAsync(MessageFactory.Text("Here are the details you provided."), cancellationToken);

            await stepContext.Context.SendActivityAsync(MessageFactory.Text("Questions - "), cancellationToken);

            for (int i = 0; i < QnAData.QuestionPhrase.Count; i++)
            {
                await stepContext.Context.SendActivityAsync(MessageFactory.Text(QnAData.QuestionPhrase[i]), cancellationToken);
            }


            await stepContext.Context.SendActivityAsync(MessageFactory.Text("Answer - " + (string)stepContext.Values["Answer"]), cancellationToken);

            await stepContext.Context.SendActivityAsync(MessageFactory.Text("Please wait while I update your Knowledge Base."), cancellationToken);

            var authoringURL = $"https://{Configuration["ResourceName"]}.cognitiveservices.azure.com";

            // <AuthorizationAuthor>
            var client = new QnAMakerClient(new ApiKeyServiceClientCredentials(Configuration["Key"]))
            { Endpoint = authoringURL };
            // </AuthorizationAuthor>

            QnAClient.UpdateKB(client, Configuration["KnowledgeBaseId"], (string)stepContext.Values["Answer"]).Wait();
            QnAClient.PublishKb(client, Configuration["KnowledgeBaseId"]).Wait();

            await stepContext.Context.SendActivityAsync(MessageFactory.Text("I have added your qna pair in the Knowledge Base. Thank you for using QnA Updator Bot Service."));

            return await stepContext.EndDialogAsync(null, cancellationToken);
        }
        else
        {
            await stepContext.Context.SendActivityAsync(MessageFactory.Text("Request Not Confirmed."));
            return await stepContext.EndDialogAsync(cancellationToken: cancellationToken);
        }