private void btnNewAppt_Click(object sender, RoutedEventArgs e)
{
CreateAppt createAppt = new CreateAppt();
createAppt.Show();
this.Close();
}
private void Button_Click(object sender, RoutedEventArgs e)//new appointment for new patient
{
CreateAppt createAppt = new CreateAppt();
createAppt.Show();
this.Close();
}