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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;//ÓÃÓÚÊý¾Ý·ÃÎÊ
using System.Drawing;//Ìṩ»GDI+ͼÐεĻù±¾¹¦ÄÜ
using System.Drawing.Text;//Ìṩ»GDI+ͼÐεĸ߼¶¹¦ÄÜ
using System.Drawing.Drawing2D;//Ìṩ»¸ß¼¶¶þά£¬Ê¸Á¿Í¼Ðι¦ÄÜ
using System.Drawing.Imaging;
using System.IO;//Ìṩ»GDI+ͼÐεĸ߼¶¹¦ÄÜ
namespace Insight_cs.WebCharts
{
public class BarChart
{
public BarChart()
{
}
public void Render(string title, string subTitle, int width, int height, DataSet chartData, Stream target)
{
const int SIDE_LENGTH = 400;
const int CHART_TOP = 75;
const int CHART_HEIGHT = 200;
const int CHART_LEFT = 50;
const int CHART_WIDTH = 300;
DataTable dt = chartData.Tables[0];
//¼ÆËã×î¸ßµÄµã
float highPoint = 0; //yÖá×î¸ßµã
foreach (DataRow dr in dt.Rows)
{
 
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