QnA Maker Zoom Integration code.

zoomqna.cs

var kbServiceUrl = "https://appservice.azurewebsites.net/qnamaker/knowledgebases/id/generateAnswer";
var kbAuthKey = "authkey";
var answer = string.Empty;
using (var httpClient = httpClientFactory.CreateClient())
{
    httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("EndpointKey", kbAuthKey);
    var question = new JObject();
    question["question"] = cmd;
    var questionContent = new StringContent(question.ToString(), Encoding.UTF8, "application/json");
    var questionResponse = await httpClient.PostAsync(kbServiceUrl, questionContent);
    var answers = await questionResponse.Content.ReadAsStringAsync();
    var answersObject = JObject.Parse(answers);
    answer = answersObject["answers"][0]["answer"].Value<string>();
}