private void radioButton1_CheckedChanged(object sender, EventArgs e)
 {
     rate            = new UserRatingStrategy();
     txt_rating.Text = rate.getRating(recipe).ToString();
 }
 private void HealthRatingradioBtn_CheckedChanged(object sender, EventArgs e)
 {
     rate            = new HealthRatingStrategy();
     txt_rating.Text = rate.getRating(recipe).ToString();
 }