private void createAccount_btn_Click(object sender, EventArgs e)
{
if (InputServices.TextBoxError(username_txtbx, errorProvider1) && InputServices.TextBoxError(password_txtbx, errorProvider1) &&
InputServices.TextBoxError(name_txtbx, errorProvider1) && InputServices.TextBoxError(lastName_txtbx, errorProvider1) &&
InputServices.ComboBoxError(department_combobx, errorProvider1))
{
Department department = department_combobx.SelectedItem as Department;
accountService.AddNewUser(username_txtbx.Text, password_txtbx.Text, name_txtbx.Text, lastName_txtbx.Text, dayOfBirth_pckr.Value, GenderChoice(), department);
Hide();
var mainForm = new MainForm();
mainForm.ShowDialog();
Close();
}
}