public ActionResult VkOAuth(string code)
        {
            string code_from_vk = Request.Url.Query.Substring(6);

            VkOAuthAccessJSON accessData = VkOAuthData.GetAccessToken(code_from_vk);

            RootVkUserInfo userInfo = VkOAuthData.GetUserInfo(accessData.user_id, accessData.access_token);

            RootVkFriends friends = VkOAuthData.GetUserFriends(accessData.user_id, accessData.access_token);

            User newUser = new User();

            newUser.VkId        = accessData.user_id;
            newUser.AccessToken = accessData.access_token;
            newUser.ExpiresIn   = accessData.expires_in;

            newUser.Name = userInfo.response[0].first_name + " " + userInfo.response[0].last_name;

            List <VkFriend> newUserFriends = new List <VkFriend>();

            foreach (ItemVkFriends friend in friends.response.items)
            {
                newUserFriends.Add(
                    new VkFriend()
                {
                    Id   = friend.id,
                    Name = friend.first_name + " " + friend.last_name,
                    Img  = friend.photo_100
                }
                    );
            }

            newUser.Friends = newUserFriends;


            using (UserContext db = new UserContext())
            {
                db.Users.Add(newUser);
                db.SaveChanges();
            }
            FormsAuthentication.SetAuthCookie(newUser.VkId, true);
            return(RedirectToAction("Index", "Home"));
        }
 public ActionResult Login()
 {
     ViewBag.url = VkOAuthData.GetRequestToAuth();
     return(View());
 }