// Asiakkaan muokkaus
        private void btn_Customer_edit_Click(object sender, EventArgs e)
        {
            var form = new Customer_popup();

            form.Show(this);
        }
        private void btn_Customer_Add_Click_1(object sender, EventArgs e)
        {
            Customer_popup frm = new Customer_popup();

            frm.Show();
        }