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;

namespace e1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        //窗体的 paint 事件中

        private void Form1_Paint(object sender, PaintEventArgs e)

        {

            Graphics gra = e.Graphics;

            gra.TranslateTransform(0.0F,0.0F);//划线的其实位置

            gra.PageUnit = GraphicsUnit.Pixel;//单位 像素，厘米，英寸 等。。。

            Pen pen = new Pen(Color.Blue, /);//设置画笔

            gra.DrawLine(pen, , , , );//绘制直线

        }

    }

}