Converting ordinary Http Post web request with Async and Await

Question

How I can convert my traditional HttpWebRequest \"POST\" call with Async / Await pattern, Here with this I am attaching my current code, Any one please help me to convert th

Answer 1

This should do the job:

    public async void GetEnvironmentVariables(Action getResultCallback, Action getErrorCallback) {
        CredentialsCallback = getResultCallback;
        ErrorCallback = getErrorCallback;
        var uri = new Uri(BaseUri);
        var request = (HttpWebRequest)WebRequest.Create(uri);
        request.Method = "POST";
        request.ContentType = "application/json";

        var jsonObject = new JObject {
            new JProperty("apiKey", _api),
            new JProperty("affiliateId", _affid),
        };

        var serializedResult = JsonConvert.SerializeObject(jsonObject);
        var requestBody = Encoding.UTF8.GetBytes(serializedResult);

        var requestStream = request.GetRequestStream();
        requestStream.Write(requestBody, 0, requestBody.Length);

        await GetResponse(request);
    }

    private async Task GetResponse(WebRequest request) {
        Stream resStream = null;

        try {
            var response = await request.GetResponseAsync();

            if (response == null) {
                return;
            }

            resStream = response.GetResponseStream();
            if (resStream == null) {
                return;
            }

            var reader = new StreamReader(resStream);
            var responseString = await reader.ReadToEndAsync();
            Credentails = JsonConvert.DeserializeObject(responseString);
            if (Credentails != null && string.IsNullOrEmpty(Credentails.Err)) {
                CredentialsCallback(Credentails);
            }
            else {
                if (Credentails != null) {
                    ErrorCallback(new Exception(string.Format("Error Code : {0}", StorageCredentails.Err)));
                }
            }
        }
        catch (WebException we) {
            if (resStream != null) {
                var reader = new StreamReader(resStream);
                var responseString = reader.ReadToEnd();
                Debug.WriteLine(responseString);
            }
            ErrorCallback(we);
        }
    }