基於C#完成的端口掃描器實例代碼。本站提示廣大學習愛好者：（基於C#完成的端口掃描器實例代碼）文章只能為提供參考，不一定能成為您想要的結果。以下是基於C#完成的端口掃描器實例代碼正文
本文所述為基於C#完成的端口掃描器代碼，代碼內包含了窗體和邏輯處置兩部門代碼。在代碼中，創立TcpClient對象，把TcpClient用於為TCP收集辦事供給客戶端銜接，創立線程，並創立ThreadStart拜托對象，端口掃描規模為[0-65536]，也可自界說掃描規模。
功效重要代碼以下：
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Threading;
namespace PortScanner
{
public class Form1: System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtAddr;
private System.Windows.Forms.TextBox txtStart;
private System.Windows.Forms.TextBox txtEnd;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Splitter splitter1;
private System.Windows.Forms.ListBox lbResult;
private System.Windows.Forms.Button btnScan;
private System.Windows.Forms.ProgressBar progressBar1;
private System.Windows.Forms.Label lblStart;
private System.Windows.Forms.Label lblStop;
private System.Windows.Forms.Label lblNow;
//自界說變量
private int port;
private string Addr;
private bool[] done = new bool[65536];
private int start;
private int end;
private Thread scanThread;
private bool OK;
public Form1()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.lbResult = new System.Windows.Forms.ListBox();
this.txtAddr = new System.Windows.Forms.TextBox();
this.txtStart = new System.Windows.Forms.TextBox();
this.txtEnd = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.splitter1 = new System.Windows.Forms.Splitter();
this.btnScan = new System.Windows.Forms.Button();
this.progressBar1 = new System.Windows.Forms.ProgressBar();
this.lblStart = new System.Windows.Forms.Label();
this.lblStop = new System.Windows.Forms.Label();
this.lblNow = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// lbResult
//
this.lbResult.Dock = System.Windows.Forms.DockStyle.Right;
this.lbResult.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.lbResult.ItemHeight = 14;
this.lbResult.Location = new System.Drawing.Point(224, 0);
this.lbResult.Name = "lbResult";
this.lbResult.Size = new System.Drawing.Size(264, 270);
this.lbResult.TabIndex = 0;
//
// txtAddr
//
this.txtAddr.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.txtAddr.Location = new System.Drawing.Point(72, 16);
this.txtAddr.Name = "txtAddr";
this.txtAddr.Size = new System.Drawing.Size(136, 22);
this.txtAddr.TabIndex = 1;
this.txtAddr.Text = "";
//
// txtStart
//
this.txtStart.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.txtStart.Location = new System.Drawing.Point(72, 48);
this.txtStart.Name = "txtStart";
this.txtStart.Size = new System.Drawing.Size(136, 22);
this.txtStart.TabIndex = 2;
this.txtStart.Text = "";
this.txtStart.TextChanged += new System.EventHandler(this.txtStart_TextChanged);
//
// txtEnd
//
this.txtEnd.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.txtEnd.Location = new System.Drawing.Point(72, 80);
this.txtEnd.Name = "txtEnd";
this.txtEnd.Size = new System.Drawing.Size(136, 22);
this.txtEnd.TabIndex = 3;
this.txtEnd.Text = "";
this.txtEnd.TextChanged += new System.EventHandler(this.txtEnd_TextChanged);
//
// label1
//
this.label1.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label1.Location = new System.Drawing.Point(8, 16);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(64, 23);
this.label1.TabIndex = 4;
this.label1.Text = "主機地址";
//
// label2
//
this.label2.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label2.Location = new System.Drawing.Point(8, 80);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(64, 23);
this.label2.TabIndex = 5;
this.label2.Text = "停止端口";
//
// label3
//
this.label3.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label3.Location = new System.Drawing.Point(8, 48);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(64, 23);
this.label3.TabIndex = 6;
this.label3.Text = "肇端端口";
//
// splitter1
//
this.splitter1.Dock = System.Windows.Forms.DockStyle.Right;
this.splitter1.Location = new System.Drawing.Point(221, 0);
this.splitter1.Name = "splitter1";
this.splitter1.RightToLeft = System.Windows.Forms.RightToLeft.Yes;
this.splitter1.Size = new System.Drawing.Size(3, 273);
this.splitter1.TabIndex = 7;
this.splitter1.TabStop = false;
//
// btnScan
//
this.btnScan.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.btnScan.Location = new System.Drawing.Point(72, 200);
this.btnScan.Name = "btnScan";
this.btnScan.TabIndex = 8;
this.btnScan.Text = "掃描";
this.btnScan.Click += new System.EventHandler(this.btnScan_Click);
//
// progressBar1
//
this.progressBar1.Location = new System.Drawing.Point(8, 112);
this.progressBar1.Name = "progressBar1";
this.progressBar1.Size = new System.Drawing.Size(200, 23);
this.progressBar1.Step = 1;
this.progressBar1.TabIndex = 9;
//
// lblStart
//
this.lblStart.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.lblStart.Location = new System.Drawing.Point(8, 144);
this.lblStart.Name = "lblStart";
this.lblStart.Size = new System.Drawing.Size(48, 23);
this.lblStart.TabIndex = 10;
//
// lblStop
//
this.lblStop.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.lblStop.Location = new System.Drawing.Point(160, 144);
this.lblStop.Name = "lblStop";
this.lblStop.Size = new System.Drawing.Size(48, 23);
this.lblStop.TabIndex = 11;
//
// lblNow
//
this.lblNow.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.lblNow.Location = new System.Drawing.Point(84, 144);
this.lblNow.Name = "lblNow";
this.lblNow.Size = new System.Drawing.Size(48, 23);
this.lblNow.TabIndex = 12;
this.AutoScaleBaseSize = new System.Drawing.Size(6, 15);
this.ClientSize = new System.Drawing.Size(488, 273);
this.Controls.Add(this.lblNow);
this.Controls.Add(this.lblStop);
this.Controls.Add(this.lblStart);
this.Controls.Add(this.progressBar1);
this.Controls.Add(this.btnScan);
this.Controls.Add(this.splitter1);
this.Controls.Add(this.label3);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Controls.Add(this.txtEnd);
this.Controls.Add(this.txtStart);
this.Controls.Add(this.txtAddr);
this.Controls.Add(this.lbResult);
this.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.Name = "Form1";
this.Text = "端口掃描器";
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void btnScan_Click(object sender, System.EventArgs e)
{
//創立線程，並創立ThreadStart拜托對象
Thread process = new Thread(new ThreadStart(PortScan));
process.Start();
//顯示端口掃描的規模
progressBar1.Minimum = Int32.Parse(txtStart.Text);
progressBar1.Maximum = Int32.Parse(txtEnd.Text);
//顯示框初始化
lbResult.Items.Clear();
lbResult.Items.Add("端口掃描器 v1.0.");
lbResult.Items.Add("");
}
private void PortScan()
{
start = Int32.Parse(txtStart.Text);
end = Int32.Parse(txtEnd.Text);
//檢討輸出規模正當性
if ((start >= 0 && start <= 65536) && (end >= 0 && end <= 65536) && (start <= end))
{
lbResult.Items.Add("開端掃描... (能夠須要請您期待幾分鐘)");
Addr = txtAddr.Text;
for (int i = start; i <= end; i++)
{
port = i;
//應用該端口的掃描線程
scanThread = new Thread(new ThreadStart(Scan));
scanThread.Start();
//使線程睡眠
System.Threading.Thread.Sleep(100);
progressBar1.Value = i;
lblNow.Text = i.ToString();
}
//未完成時情形
while (!OK)
{
OK = true;
for (int i = start; i <= end; i++)
{
if (!done[i])
{
OK = false;
break;
}
}
System.Threading.Thread.Sleep(1000);
}
lbResult.Items.Add("掃描停止!");
}
else
{
MessageBox.Show("輸出毛病，端口規模為[0-65536]");
}
}
private void Scan()
{
int portnow = port;
//創立線程變量
Thread Threadnow = scanThread;
done[portnow] = true;
//創立TcpClient對象，TcpClient用於為TCP收集辦事供給客戶端銜接
TcpClient objTCP = null;
//掃描端口，勝利則寫入信息
try
{
//用TcpClient對象掃描端口
objTCP = new TcpClient(Addr, portnow);
lbResult.Items.Add("端口 " + portnow.ToString() + " 開放!");
}
catch
{
}
}
private void txtStart_TextChanged(object sender, System.EventArgs e)
{
//獲得輸出的肇端端口值
lblStart.Text = txtStart.Text;
}
private void txtEnd_TextChanged(object sender, System.EventArgs e)
{
//獲得輸出的接收端口值
lblStop.Text = txtEnd.Text;
}
}
}
