請大俠 幫忙看看，我用mschart 作柱狀圖數據能出來，而轉為餅狀圖是就開始報錯：在一個圖表區中，Pie 圖表不能與任何其他圖表類型組合使用。代碼：  Series series = Chart1.Series.Add("My series");  double[] y = { 63.1, 50.5, 72.6, 20.8, 59.9 };  string[] x = { "a", "b", "c", "d", "e" };  series.Points.DataBindXY(x, y);  series.ChartType = SeriesChartType.Pie;  series.ShadowOffset = 1;  series.BorderColor = Color.DarkGray;     Chart1.Width = 600;  Chart1.Height = 400;