C#绘制饼状图和柱状图的方法
作者:CodingByMe
这篇文章主要为大家详细介绍了C#绘制饼状图和柱状图的方法,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
本文实例为大家分享了C#绘制饼状图和柱状图的具体代码,供大家参考,具体内容如下
#代码如下:
using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.SqlClient; using System.Drawing; using System.Drawing.Drawing2D; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace TEST3._2 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { BarMap(); } private void BitMap()//饼状图 { int[] saleNum = { 300, 500, 400 }; int sum = 0, threeNum = 0, fourNum = 0, fiveNum = 0; for (int i = 0; i < saleNum.Length; i++) { sum += saleNum[i]; if (i == 0) threeNum = saleNum[0]; else if (i == 1) fourNum = saleNum[1]; else fiveNum = saleNum[2]; } int height = pictureBox1.Height, width = pictureBox1.Width; Bitmap bitmap = new Bitmap(width, height); Graphics g = Graphics.FromImage(bitmap); g.Clear(Color.White); Pen pen1 = new Pen(Color.Red); Brush brush1 = new SolidBrush(Color.PowderBlue); Brush brush2 = new SolidBrush(Color.Blue); Brush brush3 = new SolidBrush(Color.Wheat); Brush brush4 = new SolidBrush(Color.Orange); Font font1 = new Font("Couriter New", 16, FontStyle.Bold); Font font2 = new Font("Couriter New", 10); g.FillRectangle(brush1, 0, 0, width, height); g.DrawString("每月销售占比饼状图", font1, brush2, new Point(70, 20)); int piex = 100, piey = 60, piew = 200, pieh = 200; float angle1 = Convert.ToSingle((360 / Convert.ToSingle(sum)) * Convert.ToSingle(threeNum)); float angle2 = Convert.ToSingle((360 / Convert.ToSingle(sum)) * Convert.ToSingle(fourNum)); float angle3 = Convert.ToSingle((360 / Convert.ToSingle(sum)) * Convert.ToSingle(fiveNum)); g.FillPie(brush2, piex, piey, piew, pieh, 0, angle1); g.FillPie(brush3, piex, piey, piew, pieh, angle1, angle2); g.FillPie(brush4, piex, piey, piew, pieh, angle1 + angle2, angle3); g.DrawRectangle(pen1, 50, 300, 310, 130); g.FillRectangle(brush2, 90, 320, 20, 10); g.DrawString(string.Format("3月份销量占比:{0:P2}", Convert.ToSingle(threeNum) / Convert.ToSingle(sum)), font2, brush2, 120, 320); g.FillRectangle(brush3, 90, 360, 20, 10); g.DrawString(string.Format("4月份销量占比:{0:P2}", Convert.ToSingle(fourNum) / Convert.ToSingle(sum)), font2, brush2, 120, 360); g.FillRectangle(brush4, 90, 400, 20, 10); g.DrawString(string.Format("5月份销量占比:{0:P2}", Convert.ToSingle(fiveNum) / Convert.ToSingle(sum)), font2, brush2, 120, 400); this.groupBox1.Text = "饼状图"; this.pictureBox1.Width = bitmap.Width; this.pictureBox1.Height = bitmap.Height; this.pictureBox1.BackgroundImage = bitmap; } private void BarMap()//柱状图 { int[] saleNum = { 300, 500, 400 }; int sum = saleNum[0]+ saleNum[1]+ saleNum[2]; float[] Y_Num ={ Convert.ToSingle(saleNum[0]) / Convert.ToSingle(sum),Convert.ToSingle(saleNum[1]) / Convert.ToSingle(sum), Convert.ToSingle(saleNum[2]) / Convert.ToSingle(sum) }; int height = pictureBox1.Height, width = pictureBox1.Width; Bitmap image = new Bitmap(width, height); //创建Graphics类对象 Graphics g = Graphics.FromImage(image); try { //清空图片背景色 g.Clear(Color.White); Font font = new Font("Arial", 10, FontStyle.Regular); Font font1 = new Font("宋体", 20, FontStyle.Bold); LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height),Color.Blue, Color.BlueViolet, 1.2f, true); Font font2 = new System.Drawing.Font("Arial", 10, FontStyle.Bold); SolidBrush mybrush = new SolidBrush(Color.Red); SolidBrush mybrush2 = new SolidBrush(Color.Green); Pen mypen = new Pen(brush, 1); //绘制线条 //绘制横向线条 int x = 100; Pen mypen1 = new Pen(Color.Blue, 2); x = 60; g.DrawLine(mypen1, x, 0, x, 300); //绘制纵向线条 int y = 0; for (int i = 0; i <11; i++) { g.DrawLine(mypen, 45, y, 60, y); y = y + 30; } g.DrawLine(mypen1, 60, y-30, 620, y-30); //x轴 String[] n = { "3月份", "4月份", "5月份"}; x = 100; for (int i = 0; i < 3; i++) { g.DrawString(n[i].ToString(), font, Brushes.Blue, x, 300); //设置文字内容及输出位置 Console.WriteLine(300 - Y_Num[i] * 100 * 3); g.FillRectangle(mybrush, x, 300 - Y_Num[i] * 100 * 3, 20, Y_Num[i] * 100 * 3); g.DrawString(Y_Num[i].ToString(), font2, Brushes.Green, x, 300 - Y_Num[i] * 100 * 3 - 15); x = x + 100; } //y轴 String[] m = {"0","0.10","0.20", "0.30", "0.40", "0.50", "0.60", "0.70", " 0.80"," 0.90", " 1.00" }; y = 0; for (int i = 10; i >= 0; i--) { g.DrawString(m[i].ToString(), font, Brushes.Blue, 20, y); //设置文字内容及输出位置 y = y + 30; } //绘制标识 Font font3 = new System.Drawing.Font("Arial", 10, FontStyle.Regular); g.DrawRectangle(new Pen(Brushes.Blue), 170, 390, 250, 50); //绘制范围框 g.FillRectangle(Brushes.Red, 200, 410, 20, 10); //绘制小矩形 g.DrawString("月销量占比", font3, Brushes.Red, 292, 408); this.button1.Text = "查看饼状图"; this.groupBox1.Text = "柱状图"; this.pictureBox1.Width = image.Width; this.pictureBox1.Height = image.Height; this.pictureBox1.BackgroundImage = image; } catch { } } private void Button1_Click(object sender, EventArgs e) { BitMap(); this.button1.Visible =false;//隐藏button } } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。