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  • GDI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.Threading.Tasks;
    using System.Windows.Forms;
    using System.IO;
    using System.Drawing.Drawing2D;
    
    namespace App1
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
            //定义起始高度和增量
            int y = 200;
            int i;
            //侧面
            private void Button1_Click(object sender, EventArgs e)
            {
                Graphics g = this.CreateGraphics();
                Pen pen = new Pen(Color.Gray, 3);
                for (i = 0; i < 40; i++)
                {
                    g.DrawEllipse(pen, 250, y - i, 150, 80);
                }
            }
            //顶部
            private void Button2_Click(object sender, EventArgs e)
            {
                Graphics g = this.CreateGraphics();
                g.FillEllipse(Brushes.White, 250, y - i, 150, 80);
            }
            //黄色
            private void Button3_Click(object sender, EventArgs e)
            {
                Graphics g = this.CreateGraphics();
                g.FillPie(Brushes.Yellow, 250, y - i, 150, 80, 0, 120);
            }
            //蓝色
            private void Button4_Click(object sender, EventArgs e)
            {
                Graphics g = this.CreateGraphics();
                g.FillPie(Brushes.Blue, 250, y - i, 150, 80, 120, 60);
            }
            //绿色
            private void Button5_Click(object sender, EventArgs e)
            {
                Graphics g = this.CreateGraphics();
                g.FillPie(Brushes.Green, 250, y - i, 150, 80, 180, 180);
            }
        }
    }
    App1
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  • 原文地址:https://www.cnblogs.com/Luck1996/p/11980918.html
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