2018年6月15日随笔--统计图

柱状图代码：这是画的图，所以要放在一个“容器”中，我放在的是pictureBox控件中；在方法最后一句就是放在pictureBox1的。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Data.SqlClient;

namespace 统计图
{
    public partial class MYtest : Form
    {
        public MYtest()
        {
            InitializeComponent();
        }

        private void MYtest_Load(object sender, EventArgs e)
        {
            CreateImage();
        }
        private void CreateImage()
        {
            int height = 500, width = 700;
            Bitmap image = new Bitmap(width, height);
            //创建Graphics类对象
            Graphics g = Graphics.FromImage(image);

            try
            {
                //清空图片背景色
                g.Clear(Color.White);

                Font font = new Font("Arial", 10, FontStyle.Regular);
                Font font1 = new Font("宋体", 20, FontStyle.Bold);

                LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height),
                Color.Blue, Color.BlueViolet, 1.2f, true);
                g.FillRectangle(Brushes.WhiteSmoke, 0, 0, width, height);
                // Brush brush1 = new SolidBrush(Color.Blue);
                //this.ddlTaget.SelectedItem.Text + " " + this.ddlYear.SelectedItem.Text +
                g.DrawString(" 测试自动", font1, brush, new PointF(70, 30));
                //画图片的边框线
                g.DrawRectangle(new Pen(Color.Blue), 0, 0, image.Width - 1, image.Height - 1);

                AdjustableArrowCap aac = new AdjustableArrowCap(5, 2);//添加的箭头
                Pen mypen = new Pen(brush, 1);  //设置画笔
                //绘制线条
                //绘制竖向线条
                Pen mypen2 = new Pen(Color.Blue, 2);
                x = 60;
                mypen2.CustomStartCap = aac;
                g.DrawLine(mypen2, x, 80, x, 340);
                //绘制横向线条
                Pen mypen1 = new Pen(Color.Blue, 2);
                y = 340;
                mypen1.CustomEndCap = aac;
                g.DrawLine(mypen1, 60, y, 620, y);

                //x轴
                x = 85;
                for (int i = 0; i < 7; i++)
                {
                    int dt = DateTime.Now.Month;
                    dt = dt + 6 + i;
                    if (dt > 12)
                        dt = dt - 12;

                    g.DrawString(dt.ToString() + "月", font, Brushes.Blue, x, 348); //设置文字内容及输出位置
                    x = x + 60;
                }
                g.DrawString("月份", font, Brushes.Blue, 600, 348);
                //y轴
                String[] m = {"250","225", "200", "175", "150", "125", "100", " 75",
" 50", " 25", " 0"};
                y = 72;
                for (int i = 0; i < 10; i++)
                {
                    g.DrawString(m[i].ToString(), font, Brushes.Blue, 25, y); //设置文字内容及输出位置
                    y = y + 26;
                }
                g.DrawString("产量/kg", font, Brushes.Blue, 25, 60);
                int[] Count1 = new int[7];
                int[] Count2 = new int[7];
                //柱状图的柱子
                for (int i = 0; i < 7; ++i)
                {
                    Count1[i] = i + 100;
                }
                for (int i = 0; i < 7; ++i)
                {
                    Count2[i] = i + 100;
                }

                //绘制柱状图.
                x = 90;
                Font font2 = new System.Drawing.Font("Arial", 10, FontStyle.Bold);
                SolidBrush mybrush = new SolidBrush(Color.Red);
                SolidBrush mybrush2 = new SolidBrush(Color.Green);

                //第一期
                g.FillRectangle(mybrush, x, 340 - Count1[0], 20, Count1[0]);
                g.DrawString(Count1[0].ToString(), font2, Brushes.Red, x, 340 - Count1[0] - 15);

                //第二期
                x = x + 60;
                g.FillRectangle(mybrush, x, 340 - Count1[1], 20, Count1[1]);
                g.DrawString(Count1[1].ToString(), font2, Brushes.Red, x, 340 - Count1[1] - 15);


                //第三期
                x = x + 60;
                g.FillRectangle(mybrush, x, 340 - Count1[2], 20, Count1[2]);
                g.DrawString(Count1[2].ToString(), font2, Brushes.Red, x, 340 - Count1[2] - 15);


                //第四期
                x = x + 60;
                g.FillRectangle(mybrush, x, 340 - Count1[3], 20, Count1[3]);
                g.DrawString(Count1[3].ToString(), font2, Brushes.Red, x, 340 - Count1[3] - 15);


                //上半年
                x = x + 60;
                g.FillRectangle(mybrush, x, 340 - Count1[4], 20, Count1[4]);
                g.DrawString(Count1[4].ToString(), font2, Brushes.Red, x, 340 - Count1[4] - 15);


                //下半年
                x = x + 60;
                g.FillRectangle(mybrush, x, 340 - Count1[5], 20, Count1[5]);
                g.DrawString(Count1[5].ToString(), font2, Brushes.Red, x, 340 - Count1[5] - 15);

                //全年
                x = x + 60;
                g.FillRectangle(mybrush, x, 340 - Count1[6], 20, Count1[6]);
                g.DrawString(Count1[6].ToString(), font2, Brushes.Red, x, 340 - Count1[6] - 15);

                //绘制标识
                Font font3 = new System.Drawing.Font("Arial", 10, FontStyle.Regular);
                g.DrawRectangle(new Pen(Brushes.Blue), 170, 400, 250, 50); //绘制范围框
                g.FillRectangle(Brushes.Red, 270, 410, 20, 10); //绘制小矩形
                g.DrawString("报名人数", font3, Brushes.Red, 292, 408);

                //g.FillRectangle(Brushes.Green, 270, 430, 20, 10);
                //g.DrawString("通过人数", font3, Brushes.Green, 292, 428);

                System.IO.MemoryStream ms = new System.IO.MemoryStream();
                image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
                //Response.ClearContent();
                //Response.ContentType = "image/Jpeg";
                //Response.BinaryWrite(ms.ToArray());
            }
            finally
            {
                pictureBox1.Image = Image.FromHbitmap(image.GetHbitmap());
                g.Dispose();
                image.Dispose();
            }
        }
    }
}

呈现出来的效果：