protected override void OnEnabledChanged(EventArgs e)
{
base.OnEnabledChanged(e);
edtManufacturerCageCode.BackColor = Enabled ? _clrWrite : _clrReadOnly;
edtManufacturerFaxNumber.BackColor = Enabled ? _clrWrite : _clrReadOnly;
edtManufacturerName.BackColor = Enabled ? _clrWrite : _clrReadOnly;
edtManufacturerURL.BackColor = Enabled ? _clrWrite : _clrReadOnly;
mailingAddressControl.Enabled = chkHasAddress.Checked;
}