private void dataLabelStyleButton_Click(object sender, System.EventArgs e)
        {
            NDataLabelStyle result;

            if (NDataLabelStyleTypeEditor.Edit(m_Point.DataLabelStyle, out result))
            {
                m_Point.DataLabelStyle = result;
                nChartControl1.Refresh();
            }
        }
        private void SeriesDataLabelButton_Click(object sender, System.EventArgs e)
        {
            NSeries         series = (NSeries)nChartControl1.Charts[0].Series[0];
            NDataLabelStyle dataLabelStyleResult;

            if (NDataLabelStyleTypeEditor.Edit(series.DataLabelStyle, out dataLabelStyleResult))
            {
                series.DataLabelStyle = dataLabelStyleResult;
                nChartControl1.Refresh();
            }
        }
        private void LabelStyleButton_Click(object sender, System.EventArgs e)
        {
            if (nChartControl1 == null)
            {
                return;
            }

            NDataLabelStyle styleResult;
            NSeries         series = (NSeries)nChartControl1.Charts[0].Series[0];

            if (NDataLabelStyleTypeEditor.Edit(series.DataLabelStyle, out styleResult))
            {
                series.DataLabelStyle = styleResult;
                nChartControl1.Refresh();
            }
        }