Microsoft Bot Framework and the QNA maker implementation

Implementing the QnA maker with the Bot framework.

Requirements:
1.qnamaker.ai - subscription and knowledge base id

2.Develop a knowledge base

3.Install the nugget (Install-Package QnAMakerDialog)

Code:

MessagesController:


internal static IDialog<object> MakeRoot()
        {
            return Chain.From(() => new Dialogs.QnADialog());
        }
        /// <summary>
        /// POST: api/Messages
        /// Receive a message from a user and reply to it
        /// </summary>
        public async Task<HttpResponseMessage> Post([FromBody]Activity activity)
        {
            if (activity.Type == ActivityTypes.Message)
            {
                await Conversation.SendAsync(activity,MakeRoot);
            }
            else
            {
                HandleSystemMessage(activity);
            }
            var response = Request.CreateResponse(HttpStatusCode.OK);
            return response;
        }




QnADialog:



using Microsoft.Bot.Builder.Dialogs;
using Microsoft.Bot.Connector;
using QnAMakerDialog;
using System;
using System.Threading.Tasks;
namespace FastTrack_Bot.Dialogs
{
    [Serializable]
    [QnAMakerService("-----------------------------", "------------------------")]
    public class QnADialog : QnAMakerDialog<object>
    {
        public override async Task NoMatchHandler(IDialogContext context, string originalQueryText)
        {
            await context.PostAsync($"Sorry, I couldn't find an answer for '{originalQueryText}'.");
            context.Wait(MessageReceived);
     
        }

        /// <summary>
        /// This is the default handler used if no specific applicable score handlers are found
        /// </summary>
        public override async Task DefaultMatchHandler(IDialogContext context, string originalQueryText, QnAMakerResult result)
        {
            // ProcessResultAndCreateMessageActivity will remove any attachment markup from the results answer
            // and add any attachments to a new message activity with the message activity text set by default
            // to the answer property from the result
            var messageActivity = ProcessResultAndCreateMessageActivity(context, ref result);
            messageActivity.Text = $"I found an answer that might help...{result.Answer}.";

            await context.PostAsync(messageActivity);

            context.Wait(MessageReceived);
        }

        /// <summary>
        /// Handler to respond when QnAMakerResult score is a maximum of 50
        /// </summary>
        [QnAMakerResponseHandler(50)]
        public async Task LowScoreHandler(IDialogContext context, string originalQueryText, QnAMakerResult result)
        {
            var messageActivity = ProcessResultAndCreateMessageActivity(context, ref result);
            messageActivity.Text = $"I found an answer that might help...{result.Answer}.";
            await context.PostAsync(messageActivity);

            context.Wait(MessageReceived);
        }
    }
}