实现画柱状图，饼状图，典线图等功能。传入DataTable，自动对各列进行画图。-To achieve painting histogram, pie chart, line graph code functions. Incoming DataTable, automatic drawing of each column.

ZedGraph是一个报表图形生成工具。可以生成折线、饼图、雷达图、柱状图等等n多图形-ZedGraph is a graphical report generation tool. Can generate a broken line, pie, radar chart, histogram, and so n multi-graphics

wfChart统计图表组件 饼图、柱状图、曲线图-wfChart component pie charts, bar charts, graphs