private void btn_Cottages_Add_Click_1(object sender, EventArgs e)
        {
            Cottage_popup frm = new Cottage_popup();

            frm.Show();
        }
        // Mökin muokkaus
        private void btn_Cottages_edit_Click(object sender, EventArgs e)
        {
            var form = new Cottage_popup();

            form.Show(this);
        }