用C#画直线

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Threading;
using System.Text;
using System.Windows.Forms;

namespace sin
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Graphics DrawInterface = panel1.CreateGraphics();
            Pen MyPenBlack = new Pen(Color.Black, 5);
            DrawInterface.DrawLine(MyPenBlack, 0, 300, 800, 300);
        }
    }
}