第十二周 C# 试验《 4 》

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4.编写一个Windows应用程序，由给定数据25，15，10，30，20饼图（如图4）

private void Form1_Paint(object sender, PaintEventArgs e)

{

int [] array={25,15,10,30,20};

float sum=0;

for (int i = 0; i < array.Length; i++)

{

sum+=array[i];

}

Graphics g = e.Graphics;

SolidBrush brush =newSolidBrush(Color.Red);

g.FillPie(brush, new Rectangle(10, 10, 200, 200), 0, (float)array[0] *360/ sum);

brush = new SolidBrush(Color.Blue);

g.FillPie(brush, new Rectangle(10, 10, 200, 200), (float)array[0] * 360 / sum, (float)array[1] * 360 / sum);

brush = new SolidBrush(Color.Green);

g.FillPie(brush, new Rectangle(10, 10, 200, 200), (float)(array[0]+array[1]) * 360 / sum,

(float)array[2] * 360 / sum);

brush = new SolidBrush(Color.Yellow);

g.FillPie(brush, new Rectangle(10, 10, 200, 200),

(float)(array[0] + array[1]+array[2]) * 360 / sum,

(float)array[3] * 360 / sum);

brush = new SolidBrush(Color.White);

g.FillPie(brush, new Rectangle(10, 10, 200, 200),

(float)(array[0] + array[1] + array[2]+array[3]) * 360 / sum,

(float)array[4] * 360 / sum);

}

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;using System.Drawing.Drawing2D;namespace WindowsFormsApplication2{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void Form1_Paint(object sender, PaintEventArgs e)        {            int[] array = { 25, 15, 10, 30, 20 };            float sum = 0;            for (int i = 0; i < array.Length; i++)            {                sum += array[i];            }            Graphics g = e.Graphics;            SolidBrush brush = new SolidBrush(Color.Red);            g.FillPie(brush, new Rectangle(10, 10, 200, 200), 0, (float)array[0] * 360 / sum);            brush = new SolidBrush(Color.Blue);            g.FillPie(brush, new Rectangle(10, 10, 200, 200), (float)array[0] * 360 / sum, (float)array[1] * 360 / sum);            brush = new SolidBrush(Color.Green);            g.FillPie(brush, new Rectangle(10, 10, 200, 200), (float)(array[0] + array[1]) * 360 / sum,                (float)array[2] * 360 / sum);            brush = new SolidBrush(Color.Yellow);            g.FillPie(brush, new Rectangle(10, 10, 200, 200),(float)(array[0] + array[1] + array[2]) * 360 / sum,                (float)array[3] * 360 / sum);            brush = new SolidBrush(Color.White);            g.FillPie(brush, new Rectangle(10, 10, 200, 200),(float)(array[0] + array[1] + array[2] + array[3]) * 360 / sum,                (float)array[4] * 360 / sum);}        }    }

第十二周 C# 试验 《 4 》

第十二周 C# 试验《 4 》