/// <summary> /// 设置饼状图的Lable位置 /// </summary> /// <param name="series">Series</param> /// <param name="lablePosition">PieSeriesLabelPosition枚举</param> public static void SetLablePosition(this Series series, PieSeriesLabelPosition lablePosition) {     if (series.Label is PieSeriesLabel)     {  PieSeriesLabel _label = series.Label as PieSeriesLabel;  _label.Position = lablePosition;     }     //if (series.Label is Pie3DSeriesLabel)     //{     //    Pie3DSeriesLabel _label = series.Label as Pie3DSeriesLabel;     //    _label.Position = lablePosition;     //} }