User login = new User();

            var firebase = new FirebaseClient("https://hostelocator.firebaseio.com/");
        try
        {




            var value = await firebase.Child("User").OrderByValue().OnceAsync<User>();


        foreach (var item in value)
                {
            if (info.Username == item.Object.Username && info.Password == item.Object.Password )
            {


                login.Id = item.Object.Id;
                login.Fullname = item.Object.Fullname;
                login.Username = item.Object.Username;
                login.Password = item.Object.Password;
                login.Role = item.Object.Role;
                MasterPage session = new MasterPage(login);
                return login;
                }
                    else { }
                }
        }
        catch (Exception ex) { }
        return null;
    }