public static void AddNewRating(PizzaRating pizzaRating)
{
StreamWriter streamWriter = new StreamWriter("pizzaRatings.txt", true);
streamWriter.WriteLine(pizzaRating.Pizza + ", " + pizzaRating.Rating.ToString());
streamWriter.Close();
}
public static List <PizzaRating> GetRatings()
{
List <PizzaRating> ratings = new List <PizzaRating>();
StreamReader streamReader = new StreamReader("pizzaRatings.txt");
while (true)
{
string line = streamReader.ReadLine();
if (line != null)
{
PizzaRating pizzaRating = new PizzaRating()
{
Pizza = line.Split(',')[0].Trim(),
Rating = Convert.ToDecimal(line.Split(',')[1].Trim()),
};
ratings.Add(pizzaRating);
}
else
{
break;
}
}
streamReader.Close();
return(ratings);
}
private void btnAddRating_Click(object sender, EventArgs e)
{
if (cboPizza.SelectedItem != null)
{
PizzaRating pizzaRating = new PizzaRating()
{
Pizza = cboPizza.SelectedItem.ToString(),
Rating = numRating.Value
};
PizzaRatingService.AddNewRating(pizzaRating);
ratingsDataGridView.DataSource = null;
ratingsDataGridView.DataSource = PizzaRatingService.GetRatings();
ratingsDataGridView.Refresh();
MessageBox.Show("Rating is successfully added.", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
MessageBox.Show("Pizza is not selected.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}