private void ShowAppointment()
{
var parameters = new MvxBundle(new Dictionary <string, string>
{
//["appointmentId"] = SecondAppointment.AppointmentId.ToString(CultureInfo.InvariantCulture)
["appointmentId"] = Appointments.ElementAt(1).AppointmentId.ToString(CultureInfo.InvariantCulture)
});
ShowViewModel <AppointmentDetailsViewModel>(parameters);
}