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";
}