C# 直角坐标系（绘图）

导入数据，实现在坐标系上绘画出折线图

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;
using System.IO;

namespace csc20180413
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }

        string resultFile;
        bool flag = false;
        ToolTip tooltip = new ToolTip（）;
        int[] bufx = new int[1024];
        int[] bufy = new int[1024];
        int readlen = 0;

        //重载后方法！
        protected override void OnPaint（PaintEventArgs e）
        {
            //标志为flase时，不画线
            if （flag == false） return;
            Graphics g = e.Graphics;
            g.DrawLine（Pens.Black 10

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件      15360  2018-04-16 17:42  直角坐标系\csc20180413\csc20180413\bin\Debug\csc20180413.exe

     文件      26112  2018-04-16 17:42  直角坐标系\csc20180413\csc20180413\bin\Debug\csc20180413.pdb

     文件      11600  2018-04-19 13:09  直角坐标系\csc20180413\csc20180413\bin\Debug\csc20180413.vshost.exe

     文件        490  2010-03-17 22:39  直角坐标系\csc20180413\csc20180413\bin\Debug\csc20180413.vshost.exe.manifest

     文件       3681  2018-04-14 10:30  直角坐标系\csc20180413\csc20180413\csc20180413.csproj

     文件      11963  2018-04-16 17:42  直角坐标系\csc20180413\csc20180413\Form1.cs

     文件       6363  2018-04-16 12:57  直角坐标系\csc20180413\csc20180413\Form1.Designer.cs

     文件       6229  2018-04-16 11:26  直角坐标系\csc20180413\csc20180413\Form1.resx

     文件       2335  2018-04-19 13:09  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\csc20180413.csproj.FileListAbsolute.txt

     文件        975  2018-04-15 18:21  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\csc20180413.csproj.GenerateResource.Cache

     文件      15360  2018-04-16 17:42  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\csc20180413.exe

     文件        180  2018-04-16 17:42  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\csc20180413.Form1.resources

     文件      26112  2018-04-16 17:42  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\csc20180413.pdb

     文件        180  2018-04-16 17:42  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\csc20180413.Properties.Resources.resources

     文件       2164  2018-04-16 08:12  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6423  2018-04-19 13:09  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        304  2018-04-16 17:42  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\GenerateResource.read.1.tlog

     文件        722  2018-04-16 17:42  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\GenerateResource.write.1.tlog

     文件        492  2018-04-13 08:20  直角坐标系\csc20180413\csc20180413\Program.cs

     文件       1372  2018-04-13 08:20  直角坐标系\csc20180413\csc20180413\Properties\AssemblyInfo.cs

     文件       2870  2018-04-13 08:20  直角坐标系\csc20180413\csc20180413\Properties\Resources.Designer.cs

     文件       5612  2018-04-13 08:19  直角坐标系\csc20180413\csc20180413\Properties\Resources.resx

     文件       1094  2018-04-13 08:20  直角坐标系\csc20180413\csc20180413\Properties\Settings.Designer.cs

     文件        249  2018-04-13 08:19  直角坐标系\csc20180413\csc20180413\Properties\Settings.settings

     文件        875  2018-04-13 08:20  直角坐标系\csc20180413\csc20180413.sln

    ..A..H.     27136  2018-04-16 17:43  直角坐标系\csc20180413\csc20180413.suo

     文件      30992  2017-03-29 14:47  直角坐标系\配套资料\e-1710.txt

     文件      31287  2017-03-29 14:59  直角坐标系\配套资料\h-1710.txt

     文件      31260  2017-03-29 15:06  直角坐标系\配套资料\hxpd-1710.txt

     目录          0  2018-04-13 08:20  直角坐标系\csc20180413\csc20180413\obj\x86\Debug\TempPE

............此处省略14个文件信息