public void SetUpdate(string id)
        {
            //MessageBox.Show(id);
            Update = true;
            Customer c = m.GetCustomer(id);

            txtName.Text          = c.Name;
            txtAddress1.Text      = c.Address1;
            txtAddress2.Text      = c.Address2;
            txtCity.Text          = c.City;
            txtCountry.Text       = c.Country;
            txtPostalAddress.Text = c.PostalAddress;
            txtPhoneNumber.Text   = c.PhoneNumber;
            UpdateID = c.ID;

            btnAdd.Text = "Update";
            Text        = "Update Customer";
        }