C# 绘制图表(柱状图,线性图,饼状图)
http://blog.csdn.net/gisfarmer/article/details/3736452
Chart饼状图,每根柱子的宽度:
int a = Chart1.Series["Series1"].Points.Count;
Chart1.Series["Series1"].CustomProperties = "PointWidth=0.5";
Chart1.Width = Unit.Pixel(25 * a);
如果有多个Series,还可以在乘以Series的个数。
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