GoogleApiServer2ServerConsole

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Google.Apis.Auth.OAuth2;
using System.Threading;
using Google.Apis.Util.Store;
using Google.Apis.Calendar.v3;
using Google.Apis.Services;
using System.IO;
using System.Security.Cryptography.X509Certificates;

namespace GoogleApiServer2ServerConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            // we have followed http://www.daimto.com/google-calendar-api-authentication-with-c/
            // you need to run PM> Install-Package Google.Apis.Calendar.v3
            // add the file abtained from Google Developers Console
            string serviceAccountEmail = "[email protected]";
            string keyFilePath = @"C:\Users\Ani\Documents\visual studio 2015\Projects\GoogleApiServer2ServerConsole\GoogleApiServer2ServerConsole\Server2Server-3de7c7534a5d.json";

            // check the file exists
            if (!File.Exists(keyFilePath))
            {
                Console.WriteLine("An Error occurred - Key file does not exist");
                return;
            }

            string[] scopes = new string[] {
                 CalendarService.Scope.Calendar, // Manage your calendars
                CalendarService.Scope.CalendarReadonly // View your Calendars
             };

            var certificate = new X509Certificate2(keyFilePath, "notasecret", X509KeyStorageFlags.Exportable);

            ServiceAccountCredential credential = new ServiceAccountCredential(
                 new ServiceAccountCredential.Initializer(serviceAccountEmail)
                 {
                     Scopes = scopes
                 }.FromCertificate(certificate));
        }
    }
}