Program.cs

//<AnalyticsApiExample>
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;

namespace TestAnalyticsAPI
{
    class Program
    {
        static void Main(string[] args)
        {
            string tenantId = "<your tenant ID>";
            string clientId = "<your client ID>";
            string clientSecret = "<your secret>";

            string scope = "https://manage.devcenter.microsoft.com";

            // Retrieve an Azure AD access token
            string accessToken = GetClientCredentialAccessToken(
                    tenantId,
                    clientId,
                    clientSecret,
                    scope).Result;

            // This is your app's Store ID. This ID is available on
            // the App identity page of the Dev Center dashboard.
            string appID = "<your app's Store ID>";

            DateTime startDate = DateTime.Parse("08-01-2015");
            DateTime endDate = DateTime.Parse("11-01-2015");
            int pageSize = 1000;
            int startPageIndex = 0;

            // Call the Windows Store analytics API
            CallAnalyticsAPI(accessToken, appID, startDate, endDate, pageSize, startPageIndex);

            Console.Read();
        }

        private static void CallAnalyticsAPI(string accessToken, string appID, DateTime startDate, DateTime endDate, int top, int skip)
        {
            string requestURI;

            // Get app acquisitions
            requestURI = string.Format(
                "https://manage.devcenter.microsoft.com/v1.0/my/analytics/appacquisitions?applicationId={0}&startDate={1}&endDate={2}&top={3}&skip={4}",
                appID, startDate, endDate, top, skip);

            //// Get add-on acquisitions
            //requestURI = string.Format(
            //    "https://manage.devcenter.microsoft.com/v1.0/my/analytics/inappacquisitions?applicationId={0}&startDate={1}&endDate={2}&top={3}&skip={4}",
            //    appID, startDate, endDate, top, skip);

            //// Get app failures
            //requestURI = string.Format(
            //    "https://manage.devcenter.microsoft.com/v1.0/my/analytics/failurehits?applicationId={0}&startDate={1}&endDate={2}&top={3}&skip={4}",
            //    appID, startDate, endDate, top, skip);

            //// Get app ratings
            //requestURI = string.Format(
            //    "https://manage.devcenter.microsoft.com/v1.0/my/analytics/ratings?applicationId={0}&startDate={1}&endDate={2}top={3}&skip={4}",
            //    appID, startDate, endDate, top, skip);

            //// Get app reviews
            //requestURI = string.Format(
            //    "https://manage.devcenter.microsoft.com/v1.0/my/analytics/reviews?applicationId={0}&startDate={1}&endDate={2}&top={3}&skip={4}",
            //    appID, startDate, endDate, top, skip);

            HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Get, requestURI);
            requestMessage.Headers.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);

            WebRequestHandler handler = new WebRequestHandler();
            HttpClient httpClient = new HttpClient(handler);

            HttpResponseMessage response = httpClient.SendAsync(requestMessage).Result;

            Console.WriteLine(response);
            Console.WriteLine(response.Content.ReadAsStringAsync().Result);

            response.Dispose();
        }

        public static async Task<string> GetClientCredentialAccessToken(string tenantId, string clientId, string clientSecret, string scope)
        {
            string tokenEndpointFormat = "https://login.microsoftonline.com/{0}/oauth2/token";
            string tokenEndpoint = string.Format(tokenEndpointFormat, tenantId);

            dynamic result;
            using (HttpClient client = new HttpClient())
            {
                string tokenUrl = tokenEndpoint;
                using (
                    HttpRequestMessage request = new HttpRequestMessage(
                        HttpMethod.Post,
                        tokenUrl))
                {
                    string content =
                        string.Format(
                            "grant_type=client_credentials&client_id={0}&client_secret={1}&resource={2}",
                            clientId,
                            clientSecret,
                            scope);

                    request.Content = new StringContent(content, Encoding.UTF8, "application/x-www-form-urlencoded");

                    using (HttpResponseMessage response = await client.SendAsync(request))
                    {
                        string responseContent = await response.Content.ReadAsStringAsync();
                        result = JsonConvert.DeserializeObject(responseContent);
                    }
                }
            }

            return result.access_token;
        }
    }
}
//</AnalyticsApiExample>