C#编程-135：Graphics绘制三维饼状图

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;
namespace Draw3DPie
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        int width = 200;
        int height = 100;
        int x = 50;
        int y = 20;
        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            Pen pen = new Pen(Color.Gray);
            Rectangle rect = new Rectangle(x, y, width, height);
            //绘制椭圆柱体
            for (int i = y; i < y+50; i++)
            {
                Rectangle rectTemp = new Rectangle(x, i, width, height);
                g.DrawEllipse(pen, rectTemp);
            }
            //填充扇形
            SolidBrush brush = new SolidBrush(Color.Gainsboro);
            g.FillPie(brush,rect,0,360);
            brush = new SolidBrush(Color.Red);
            g.FillPie(brush,rect,60,150);
            brush = new SolidBrush(Color.Yellow);
            g.FillPie(brush,rect,210,150);
            g.Dispose();
        }
    }
}