C#绘图例子 – 梁笔记

使用图形方法，在Form上画出：

1.? 画出5不同颜色直线并形成一个多边形；

2. 用红色画笔画一个圆形;

3.用图片填充一个矩形。

C#代码：

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;

namespace WindowsFormsApplication1

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

Random rand = new Random();

Point[] p = new Point[5];

private void Form1_Paint(object sender, PaintEventArgs e)

{

Graphics grap = e.Graphics;

p[0] = new Point(100, 100);

p[1] = new Point(200, 200);

p[2] = new Point(100, 300);

p[3] = new Point(000, 200);

p[4] = new Point(100, 100);

Pen pen = new Pen(Color.FromArgb(rand.Next(256), rand.Next(256), rand.Next(256)),2);

grap.DrawLines(pen, p);

Pen redpen = new Pen(Color.Red, 2);

grap.DrawArc(redpen, new Rectangle(new Point(300, 50), new Size(80, 80)), 0, 360);

grap.FillRectangle(new TextureBrush(new Bitmap("1.bmp")), new Rectangle(new Point(300, 200), new Size(80, 80)));

}

测试结果：