public EmployeesPage() { InitializeComponent(); controller = new EmployeesController(); controller.Control(); textBoxes = new LinkedList <TextBox>(); textBoxes.AddLast(textbox_name); textBoxes.AddLast(textbox_surname); textBoxes.AddLast(textbox_email); textBoxes.AddLast(textbox_phone_number); textBoxes.AddLast(textbox_address); textBoxes.AddLast(textbox_age); comboBox_gender.SelectedIndex = 0; comboBox.Items.Add("New Employee"); if (controller.HasEmployees()) { foreach (string s in controller.GetEmployeesComboBox()) { comboBox.Items.Add(s); } } comboBox.SelectedIndex = 0; }