topn3dpie.aspx
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<%@ Page language="c#" CodeBehind="topn3dpie.aspx.cs" AutoEventWireup="false" Inherits="Yeefly.topn3dpie" %>

topn3dpie.aspx.cs
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using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using System.IO;

namespace Yeefly
{
?/// <summary>
?/// Graph 的摘要说明。
?/// </summary>
?public class topn3dpie : System.Web.UI.Page
?{
? private void Page_Load(object sender, System.EventArgs e)
? {
?? Response.ContentType = "image/jpeg";
?? const int width = 300, height = 300;
?? int x = 30, y = 50;

?? int pieWidth = 120, pieHeight = 40, pieShadow = 15;
?? int[] arrVote = {70,90,80,20,60,40};
?? Random oRan = new Random();

?? Bitmap objBitmap = new Bitmap(width, height);
?? Graphics objGraphics = Graphics.FromImage(objBitmap);
?? objGraphics.DrawRectangle(new Pen(Color.Black),0,0,width,height);
?? objGraphics.FillRectangle(new SolidBrush(Color.White), 1, 1,width - 2, height - 2);
?? SolidBrush objBrush = new SolidBrush(Color.Blue);
?? objGraphics.SmoothingMode = SmoothingMode.AntiAlias;
?
?? int iCurrentPos?? = 0;

?? Color[] arrColor = {Color.Red,Color.Red,Color.Red,Color.Red,Color.Red,Color.Red};

?? for(int i = arrVote.Length - 1 ; i >= 0; i--)
?? {
??? arrColor[i] = Color.FromArgb(oRan.Next(255), oRan.Next(255), oRan.Next(255));
?? }

?? for(int i = arrVote.Length - 1 ; i >= 0; i--)
?? {
??? objBrush.Color = arrColor[i];
??? for(int iLoop2 = 0; iLoop2 < pieShadow; iLoop2++)
???? objGraphics.FillPie(new HatchBrush(HatchStyle.Percent50,objBrush.Color),x, y + iLoop2, pieWidth, pieHeight, iCurrentPos, arrVote[i]);
??? iCurrentPos += arrVote[i];
?? }

?? iCurrentPos? = 0;
?? for(int i = arrVote.Length - 1 ; i >= 0;i--)
?? {
??? objBrush.Color = arrColor[i];
??? objGraphics.FillPie(objBrush,x, y, pieWidth, pieHeight, iCurrentPos, arrVote[i]);
??? iCurrentPos += arrVote[i];
?? }

?? objBitmap.Save(Response.OutputStream, ImageFormat.Jpeg);
?? // clean up...
?? objGraphics.Dispose();
?? objBitmap.Dispose();
? }

? #region Web 窗体设计器生成的代码
? override protected void OnInit(EventArgs e)
? {
?? //
?? // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
?? //
?? InitializeComponent();
?? base.OnInit(e);
? }
?
? /// <summary>
? /// 设计器支持所需的方法 - 不要使用代码编辑器修改
? /// 此方法的内容。
? /// </summary>
? private void InitializeComponent()
? {???
?? this.Load += new System.EventHandler(this.Page_Load);
? }
? #endregion
?}
}