private void createNewDBToolStripMenuItem_Click(object sender, EventArgs e) { businessControl.removeAllData(); //Example of Reservation creation by code BranchOffice br = new BranchOffice(1, "Archiduque Carlos, 3"); Category cat = new Category(1, "luxury", 23, 12, 2, 32, 14); DateTime pickupDate = new DateTime(2016, 12, 23); DateTime returnDate = new DateTime(2016, 12, 24); CreditCard cc = new CreditCard("1122334455667788", 12, 2018, 323, "Visa"); Customer cust = new Customer("11111111A", "Javier Jaen", "Camino de Vera s/n", "Valencia", "46960", new DateTime(2014, 5, 23), new DateTime(2015, 12, 11), cc); Reservation res = new Reservation(cust, br, pickupDate, br, returnDate, cat); businessControl.addReservation(res); //Adding other Branch Offices br = new BranchOffice(2, "Av. Constitución, 14"); businessControl.addBranchOffice(br); br = new BranchOffice(3, "C/San Cristóbal, 13"); businessControl.addBranchOffice(br); //Adding Categories Category cat2 = new Category(2, "sedan", 22, 10, 2, 30, 10); cat2.Upper = cat; Category cat3 = new Category(3, "economy", 15, 5, 1, 15, 5); cat3.Upper = cat2; businessControl.addCategory(cat2); businessControl.addCategory(cat3); MessageBox.Show("Database Created Sucessfully"); }