private void authentificateWithCredentials(String username, String password)
        {
            if (userController.authenticateUser(username, password) != null) {
                Hide();

                PropertySearchForm propertySearchForm = new PropertySearchForm(false);
                propertySearchForm.Show();
            }
            else
            {
                showIncorrectCredentialsError();
            }
        }
        private void backButton_Click(object sender, EventArgs e)
        {
            Hide();

            PropertySearchForm propertySearchForm = new PropertySearchForm(propertySearchFormShouldReloadData);
            propertySearchForm.Show();
        }