default2.aspx.cs

这是asp.net^和Visual C++Sharp编写的串并口通讯的书籍 源代码

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Drawing;
using System.Drawing.Imaging;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        DrawClairvoyantPic();
    }
    //绘制透视图
    protected void DrawClairvoyantPic()
    {
        int height = 380;
        int x = 73;
        for (int i = 0; i < Session.Count / 2; i++)
        {
            x = x + 40;
        }
        System.Drawing.Bitmap image = new System.Drawing.Bitmap(x + 150, height);
        //创建Graphics类对象
        Graphics g = Graphics.FromImage(image);
        Font font = new System.Drawing.Font("Arial", 9, FontStyle.Regular);
        Font font1 = new System.Drawing.Font("宋体", 20, FontStyle.Regular);

        System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.Blue, 1.2f, true);
        g.FillRectangle(Brushes.WhiteSmoke, 0, 0, x + 150, height);
        Brush brush1 = new SolidBrush(Color.Blue);
        //画图片的边框线
        g.DrawRectangle(new Pen(Color.Blue), 0, 0, image.Width - 1, image.Height - 1);

        Pen mypen = new Pen(brush, 1);
        //绘制线条
        //绘制横向线条
        x = 100;
        for (int i = 0; i < Session.Count / 2 - 1; i++)
        {
            g.DrawLine(mypen, x, 80, x, 340);
            x = x + 40;
        }
        Pen mypen1 = new Pen(Color.Blue, 2);
        g.DrawLine(mypen1, 60, 80, 60, 340);
        g.DrawString("员工薪水透视图", font1, brush1, new PointF((x - 100) / 2, 30));

        //绘制纵向线条
        int y = 106;
        for (int i = 0; i < 9; i++)
        {
            g.DrawLine(mypen, 60, y, x + 20, y);
            y = y + 26;
        }
        g.DrawLine(mypen1, 60, y, x + 20, y);

        //x轴
        x = 73;
        for (int i = 0; i < Session.Count / 2; i++)
        {
            g.DrawString(Session["name" + i].ToString(), font, Brushes.Red, x, 348); //设置文字内容及输出位置
            x = x + 40;
        }

        String[] m = {"7200", "6400", "5600", "4800", "4000", "3200", "2400", "1600",
                     "800"};
        y = 100;
        for (int i = 0; i < 9; i++)
        {
            g.DrawString(m[i].ToString(), font, Brushes.Red, 20, y); //设置文字内容及输出位置
            y = y + 26;
        }

        int[] Count = new int[Session.Count / 2];

        for (int j = 0; j < Session.Count / 2; j++)
        {
            Count[j] = Convert.ToInt32(Session["salary" + j].ToString());
        }

        //加上各种随机色
        ArrayList colors = new ArrayList();
        Random rnd = new Random();
        for (int i = 0; i < Session.Count / 2; i++)
            colors.Add(new SolidBrush(Color.FromArgb(rnd.Next(255), rnd.Next(255), rnd.Next(255))));
        //显示透视效果
        x = 70;
        for (int i = 0; i < Session.Count / 2; i++)
        {
            g.FillRectangle((SolidBrush)colors[i], x, 340 - Count[i] * 26 / 800, 20, Count[i] * 26 / 800);
            x = x + 40;
        }
        //列出各字段及数目
        g.DrawRectangle(new Pen(Color.Black, 1), x + 30, 80, 115, 10 * (Session.Count / 2) + 18);
        for (int i = 0; i < Session.Count / 2; i++)
        {
            g.FillRectangle((SolidBrush)colors[i], x + 40, 10 * i + 90, 20, 10);
            g.DrawString(Session["name" + i].ToString() + " —— " + Count[i], new Font("verdana", 9), new SolidBrush(Color.Black),
         x + 60, 10 * i + 87);
        }
        System.IO.MemoryStream ms = new System.IO.MemoryStream();
        image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
        Response.ClearContent();
        Response.ContentType = "image/Gif";
        Response.BinaryWrite(ms.ToArray());
        g.Dispose();
        image.Dispose();
    }
}