端口扫描工具源码（PortScanner）

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

namespace PortScanner
{
    public partial class MainForm : Form
    {
        //define List to keep hostnames data
        List hostlist = new List（）;
        
        //define protocol type （tcp/udp）
        private string proto_type;

        public MainForm（）
        {
            InitializeComponent（）;
        }

        //Scan button action
        private void btnStartScan_Click（object sender EventArgs e）
        {
            //clear text box
            richTxtScreen.Clear（）;
            //parse port number String -> Int
            int portNumber = Int32.Parse（txtPortNumber.Text）;
            //protocol selection
            if （rdnBtnTCP.Checked）
            {
                proto_type = “tcp“;
           

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

    ..A..H.     51712  2019-11-06 11:05  PortScanner-master （8）\PortScanner-master\.vs\PortScanner\v16\.suo

     文件          0  2019-11-06 11:05  PortScanner-master （8）\PortScanner-master\.vs\PortScanner\v16\Server\sqlite3\db.lock

     文件     573440  2019-11-06 11:05  PortScanner-master （8）\PortScanner-master\.vs\PortScanner\v16\Server\sqlite3\storage.ide

    .......      2710  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\.gitignore

    .......       182  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\App.config

    .......     13312  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Debug\PortScanner.exe

    .......       182  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Debug\PortScanner.exe.config

    .......     32256  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Debug\PortScanner.pdb

    .......     23168  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Debug\PortScanner.vshost.exe

    .......       182  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Debug\PortScanner.vshost.exe.config

    .......       479  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Debug\PortScanner.vshost.exe.manifest

    .......     12800  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Release\PortScanner.exe

    .......       182  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Release\PortScanner.exe.config

    .......     24064  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Release\PortScanner.pdb

    .......     23168  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Release\PortScanner.vshost.exe

    .......       182  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Release\PortScanner.vshost.exe.config

    .......       479  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\bin\Release\PortScanner.vshost.exe.manifest

    .......      3062  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\Form1.cs

    .......      9220  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\Form1.Designer.cs

    .......      5868  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\Form1.resx

    .......      1561  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\Host.cs

    .......      1609  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\obj\Debug\DesignTimeResolveAssemblyReferences.cache

    .......      7087  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

    .......       981  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\obj\Debug\PortScanner.csproj.FileListAbsolute.txt

    .......       977  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\obj\Debug\PortScanner.csproj.GenerateResource.Cache

    .......      2211  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\obj\Debug\PortScanner.csprojResolveAssemblyReference.cache

    .......     13312  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\obj\Debug\PortScanner.exe

    .......       180  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\obj\Debug\PortScanner.MainForm.resources

    .......     32256  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\obj\Debug\PortScanner.pdb

    .......       180  2014-10-12 07:10  PortScanner-master （8）\PortScanner-master\PortScanner\obj\Debug\PortScanner.Properties.Resources.resources

............此处省略46个文件信息