public override XElement GetPropertiesXml(object objectControl)
        {
            Pivot.FindForm()
            .SaveDefaultLayout(Pivot.Name, Pivot);
            var xml = new XElement(Pivot.Name, Pivot.PropertiesToXml());

            foreach (PivotGridField field in Pivot.Fields)
            {
                xml.Add(field.GetControlTuner()
                        .GetPropertiesXml(field));
            }
            return(xml);
        }