public static List <Snack> ReadSnackFile(string filename) //reads from text file
        {
            List <Snack> snack = new List <Snack>();

            StreamReader sr = null;

            try
            {
                sr = new StreamReader(filename);

                while (!sr.EndOfStream)
                {
                    string line = sr.ReadLine();


                    string[] tokens = line.Split('\t');

                    string name     = tokens[0];
                    double price    = double.Parse(tokens[1]);
                    string category = tokens[2];
                    string descrip  = tokens[3];
                    string taste    = tokens[4];

                    Snack p = new Snack(name, price, category, descrip, taste);
                    snack.Add(p);
                }
            }
            catch (Exception)
            {
                Console.WriteLine("Error reading file");
            }
            finally
            {
                if (sr != null)
                {
                    sr.Close();
                }
            }
            return(snack);
        }