tubiao.aspx.cs

基于C#语言的一个企业客户管理数据库系统开发案例的源代码 ,很实用

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;
public partial class tubiao : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        this.CreateImage();
    }
    private void CreateImage()
    {
        Count cou = new Count();
        Operation oper = new Operation();
        if (oper.count(cou))
        {
            int All = cou.All;//参加服务调查的总人数
            int Good = cou.Good;//满意人数
            int Bad = cou.Bad;//不满意人数
            int Common = cou.Common;//感觉一般人数
            int width = 330, height = 285;
            Bitmap bitmap = new Bitmap(width, height);
            Graphics g = Graphics.FromImage(bitmap);
            try
            {
                //清空背景色
                g.Clear(Color.White);
                Pen pen1 = new Pen(Color.Red);
                Brush brush1 = new SolidBrush(Color.White);
                Brush brush2 = new SolidBrush(Color.Blue);
                Brush brush3 = new SolidBrush(Color.Brown);
                Brush brush4 = new SolidBrush(Color.Green);
                Brush brush5 = new SolidBrush(Color.CornflowerBlue);
                Font font1 = new Font("Courier New", 12, FontStyle.Bold);
                Font font2 = new Font("Courier New", 8);

                g.FillRectangle(brush1, 0, 0, width, height);    //绘制背景图

                g.DrawString("服务调查示意图", font1, brush5, new Point(90, 20));  //书写标题

                int piex = 80, piey = 50, piew = 150, pieh = 150;
               
                float angle1 = Convert.ToSingle((360 /Convert.ToSingle(All)) * Convert.ToSingle(Good)); //满意人数在圆中分配的角度
                float angle2 = Convert.ToSingle((360 / Convert.ToSingle(All)) * Convert.ToSingle(Bad));//不满意人数在圆中分配的角度
                float angle3 = Convert.ToSingle((360 / Convert.ToSingle(All)) * Convert.ToSingle(Common));//感觉一般人数在圆中分配的角度
                g.FillPie(brush2, piex, piey, piew, pieh, 0, angle1);  ///满意人数所占比例
                g.FillPie(brush3, piex, piey, piew, pieh, angle1, angle2);  //不满意人数所占比例
                g.FillPie(brush4, piex, piey, piew, pieh, angle1 + angle2, angle3); //感觉一般人数所占比例
                //绘制标识
                g.DrawRectangle(pen1, 50, 210, 230, 70);  //绘制范围框
                g.FillRectangle(brush2, 60, 220, 20, 10);  //绘制小矩形
                g.DrawString("满意总人数比例:" + Convert.ToSingle(Good) * 100 / Convert.ToSingle(All) + "%", font2, brush2, 90, 220);
                g.FillRectangle(brush3, 60, 240, 20, 10);
                g.DrawString("不满意总人数比例:" + Convert.ToSingle(Bad) * 100 / Convert.ToSingle(All) + "%", font2, brush3, 90, 240);
                g.FillRectangle(brush4, 60, 260, 20, 10);
                g.DrawString("感觉一般总人数比例:" + Convert.ToSingle(Common) * 100 / Convert.ToSingle(All) + "%", font2, brush4, 90, 260);
            }
            catch (Exception md)
            {
                Response.Write(md.Message);
            }

            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
            Response.ClearContent();
            Response.ContentType = "image/Jpeg";
            Response.BinaryWrite(ms.ToArray());
        }
    }
}