private void CreateDemoEntites()
        {
            try
            {
                Tester testerYossi = new Tester("Yossi", "abutbul", 123, new DateTime(1964, 10, 12), Configuration.eSex.Male, 050939393, new Adress("Avraham", 65, "Jesusalem"), 21, 4, Configuration.eTypeVechicle.PrivateCar, 31);
                Tester testerMoshe = new Tester("Moshe", "satbul", 321, new DateTime(1974, 12, 10), Configuration.eSex.Male, 050943493, new Adress("Moshe Boshe", 15, "Jesusalem"), 24, 1, Configuration.eTypeVechicle.MediumTrack, 11);
                Tester testerYakov = new Tester("Yakov", "dsabul", 341, new DateTime(1994, 12, 10), Configuration.eSex.Male, 050943493, new Adress("Moshe Boshe", 15, "Jesusalem"), 24, 1, Configuration.eTypeVechicle.MediumTrack, 11);
                bl.AddTester(testerMoshe);
                bl.AddTester(testerYossi);
                bl.AddTester(testerYakov);


                Trainee traineeAvraham = new Trainee("Avraham", "Buzaglo", 434, new DateTime(1994, 7, 10), Configuration.eSex.Male, 0578847, new Adress("her", 76, "Ashkelon"), Configuration.eTypeVechicle.MediumTrack, Trainee.eGearBox.Manual, "heyhey drive", "Moshe", 25);
                Trainee traineeRivka   = new Trainee("rivka", "Afaglo", 4464, new DateTime(1984, 4, 20), Configuration.eSex.Female, 057884547, new Adress("her", 66, "Sderot"), Configuration.eTypeVechicle.MediumTrack, Trainee.eGearBox.Manual, "heyhey drive", "Moshe", 21);
                bl.AddTrainee(traineeAvraham);
                bl.AddTrainee(traineeRivka);

                List <TestArgs> lst = new List <TestArgs>();
                lst.Add(new TestArgs(true, "bla"));
                lst.Add(new TestArgs(false, "bla"));
                lst.Add(new TestArgs(true, "bla"));

                Test testFirst = new Test(1, 321, 434, new DateTime(2018, 7, 4, 10, 20, 0), new DateTime(2018, 7, 4, 10, 20, 0), new Adress("her", 66, "Sderot"), Configuration.eTypeVechicle.PrivateCar, true, lst, "blabla");
                bl.AddTest(testFirst);
                bl.AddTest(testFirst);
            }
            catch (FormatException)
            {
                MessageBox.Show("Check your input and try again");
            }
            catch (Exception ex)
            {
                MessageBox.Show(DateTime.Now.ToString() + " " + ex.Message, "Error");
            }
            return;
        }