using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;

namespace CrystalReportsDemo
...{
    /**//// <summary>
    /// createReport绘制图形报表-柱图。
    /// </summary>
    public class createReport
    ...{

        public createReport()
        ...{
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }

        public Bitmap CreatePictureReport(string[] x,int[] y,string ReportName)
        ...{
            if(x.Length != y.Length)
            ...{
                throw new Exception("X和Y数目不一致");
            }
            int colNum=y.Length;
            int colScale=880/(colNum+1);

            Bitmap bmp = new Bitmap(900,700,PixelFormat.Format24bppRgb);
            Graphics dc = Graphics.FromImage(bmp);
            dc.FillRectangle(new SolidBrush(Color.White),0,0,900,700);

            Pen scalePen = new Pen(Color.Black,2);
            Pen gridPen = new Pen(Color.Black,1);
       

            dc.DrawLine(scalePen,20,680,880,680);
            dc.DrawLine(scalePen,20,680,20,20);

            dc.DrawLine(gridPen,20,20,880,20);
            dc.DrawLine(gridPen,880,20,880,680);

            Point drawPoint;
            int XPoint;
            int YHeight;
            if(colNum==0)
            ...{
                throw new Exception("无数据值,colNum值为0作为除数,抛出异常");
                    
            }
            int drawWidth=880/(4*colNum);
            //int drawWidth=580/(4*colNum+1);//4*colNum+1  确保colNum不为0.否则580/(4*0);的话会异常.0不能作为除数
            int maxNum=getMaxNum(y);
            Rectangle rct;
            Random