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可通过控件的BoundDataChanged事件来实现。在该事件中，通过图表的GetSeriesByName方法获取想要改变图表类型的序列，然后使用序列的ChangeView方法来改变图表类型。

关键代码：

private void chart_BoundDataChanged(object sender, EventArgs e) {

            ChartControl chart = (ChartControl)sender;

            // 改变名为"Month: Feb"序列的View

            // SideBySideBarSeriesView更改为 LineSeriesView.

            Series feb = chart.GetSeriesByName("Month: Feb");

            if (feb != null)

                feb.ChangeView(ViewType.Line);

            //改变名为" Month: March "序列的View

            // SideBySideBarSeriesView更改为SplineSeriesView.

            Series march = chart.GetSeriesByName("Month: March");

            if (march != null)

                march.ChangeView(ViewType.Spline);

        }

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