用C#画滑动的直线

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

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

        private void button1_Click(object sender, EventArgs e)
        {
            Graphics DrawInterface = panel1.CreateGraphics(); //在panel1里显示图像
           // Pen MyPen = new Pen(Color.Blue, 5);
            Pen MyPenControl = new Pen(Color.FromName("Control"), 5);
            Pen MyPenBlue = new Pen(Color.Blue, 5);
            Pen MyPenRed = new Pen(Color.Red, 5);

            for (int i = 1; i < 30; i++)
            {
              //DrawInterface.DrawLine(MyPen, 100, 100, 200, 50 * i);   //画直线：颜色， 粗细, （扇形）
              //  DrawInterface.DrawLine(MyPen, 100, 50 * i, 200, 50 * i); //画十条直线

                DrawInterface.DrawLine(MyPenBlue, 100 + 10 * i, 20 * i, 200 + 10 * i, 50 * i); //用不同颜色的笔交替画
                Thread.Sleep(500);
                DrawInterface.DrawLine(MyPenRed, 100 + 10 * i, 20 * i, 200 + 10 * i, 50 * i);
                Thread.Sleep(50);
                DrawInterface.DrawLine(MyPenControl, 100 + 10 * i, 20 * i, 200 + 10 * i, 50 * i);
            }