C# 划线源码

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace DrawLine
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void OnPaint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
Pen pen = new Pen(Color.FromArgb(128, 128, 0, 128));
pen.Width = 10;
g.DrawLine(pen, 10, 10, 100, 10);//画实线，图中左边第1条线
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;//虚线笔
g.DrawLine(pen, 10, 50, 100, 50); //画虚线，图中左边第2条线
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.DashDot;
g.DrawLine(pen, 10, 100, 100, 100);//点，短线风格的线
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.DashDotDot;
g.DrawLine(pen, 10, 150, 100, 150);//双点，短线风格的线
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
g.DrawLine(pen, 10, 200, 100, 200);//由点组成的线
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid;//实线笔
pen.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;//后箭头
g.DrawLine(pen, 150, 10, 250, 10);//图中右边第1条线
pen.StartCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;//前箭头
g.DrawLine(pen, 150, 50, 250, 50);
pen.EndCap = System.Drawing.Drawing2D.LineCap.RoundAnchor;
g.DrawLine(pen, 150, 100, 250, 100);
pen.EndCap = System.Drawing.Drawing2D.LineCap.SquareAnchor;
g.DrawLine(pen, 150, 150, 250, 150);
pen.EndCap = System.Drawing.Drawing2D.LineCap.DiamondAnchor;
g.DrawLine(pen, 150, 200, 250, 200);
}
}
}