public DataCollection readFile()
        {
            DataCollection list   = new DataCollection();
            String         str    = null;
            StreamReader   myscan = null;

            String[] token = null;

            try
            {
                myscan = new StreamReader(this.myfile);
            }
            catch
            {
                return(null);
            }

            while ((str = myscan.ReadLine()) != null)
            {
                token = str.Split('|');
                if (token[5].Contains("FullTime"))
                {
                    FullTime emp = new FullTime(token[0], token[1], token[2], token[3],
                                                token[4], token[5],
                                                new Date(token[6], token[7], token[8]),
                                                new Date(token[9], token[10], token[11]),
                                                new Address(token[12], token[13], token[14],
                                                            token[15], token[16], token[17], token[18]),
                                                new Phone(token[19], token[20], token[21], token[22]),
                                                new Phone(token[23], token[24], token[25], token[26]),
                                                token[27], token[29], token[30], token[31]);
                    list.add(emp);
                }
                else if (token[5].Contains("PartTime"))
                {
                    if (token[30].Contains("Consultant_Trainers"))
                    {
                        ConsultantTrainer emp = new ConsultantTrainer(token[0], token[1], token[2], token[3],
                                                                      token[4], token[5],
                                                                      new Date(token[6], token[7], token[8]),
                                                                      new Date(token[9], token[10], token[11]),
                                                                      new Address(token[12], token[13], token[14],
                                                                                  token[15], token[16], token[17], token[18]),
                                                                      new Phone(token[19], token[20], token[21], token[22]),
                                                                      new Phone(token[23], token[24], token[25], token[26]),
                                                                      token[27], token[29], token[30], token[31], token[32], token[33]);
                        list.add(emp);
                    }
                    else if (token[30].Contains("Internship_Student"))
                    {
                        Internship emp = new Internship(token[0], token[1], token[2], token[3],
                                                        token[4], token[5],
                                                        new Date(token[6], token[7], token[8]),
                                                        new Date(token[9], token[10], token[11]),
                                                        new Address(token[12], token[13], token[14],
                                                                    token[15], token[16], token[17], token[18]),
                                                        new Phone(token[19], token[20], token[21], token[22]),
                                                        new Phone(token[23], token[24], token[25], token[26]),
                                                        token[27], token[29], token[30], token[31], token[32]);
                        list.add(emp);
                    }
                }
            }
            myscan.Close();;
            return(list);
        }