c#实例135 如何扫描端口

using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using System.Net.Sockets; namespace PortCheck { /// <summary> /// Form1 的摘要说明。 /// </summary> public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.Label label1; private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.Label label2; private System.Windows.Forms.NumericUpDown numericUpDown1; private System.Windows.Forms.Label label3; private System.Windows.Forms.NumericUpDown numericUpDown2; private System.Windows.Forms.Button button1; private System.Windows.Forms.RichTextBox richTextBox1; private System.Windows.Forms.ProgressBar progressBar1; /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.Container components = null; public Form1() { // // Windows 窗体设计器支持所必需的 // InitializeComponent(); // // TODO: 在 InitializeComponent 调用后添加任何构造函数代码 // } /// <summary> /// 清理所有正在使用的资源。 /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows 窗体设计器生成的代码 /// <summary> /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// </summary> private void InitializeComponent() { this.label1 = new System.Windows.Forms.Label(); this.textBox1 = new System.Windows.Forms.TextBox(); this.label2 = new System.Windows.Forms.Label(); this.numericUpDown1 = new System.Windows.Forms.NumericUpDown(); this.label3 = new System.Windows.Forms.Label(); this.numericUpDown2 = new System.Windows.Forms.NumericUpDown(); this.button1 = new System.Windows.Forms.Button(); this.richTextBox1 = new System.Windows.Forms.RichTextBox(); this.progressBar1 = new System.Windows.Forms.ProgressBar(); ((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).BeginInit(); ((System.ComponentModel.ISupportInitialize)(this.numericUpDown2)).BeginInit(); this.SuspendLayout(); // // label1 // this.label1.Location = new System.Drawing.Point(8, 16); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(80, 16); this.label1.TabIndex = 0; this.label1.Text = "目标主机名："; // // textBox1 // this.textBox1.Location = new System.Drawing.Point(88, 8); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(72, 21); this.textBox1.TabIndex = 1; this.textBox1.Text = "127.0.0.1"; // // label2 // this.label2.Location = new System.Drawing.Point(168, 16); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(80, 16); this.label2.TabIndex = 2; this.label2.Text = "起始端口号："; // // numericUpDown1 // this.numericUpDown1.Location = new System.Drawing.Point(248, 8); this.numericUpDown1.Maximum = new System.Decimal(new int[] { 65536, 0, 0, 0}); this.numericUpDown1.Name = "numericUpDown1"; this.numericUpDown1.Size = new System.Drawing.Size(80, 21); this.numericUpDown1.TabIndex = 3; // // label3 // this.label3.Location = new System.Drawing.Point(8, 40); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(80, 16); this.label3.TabIndex = 4; this.label3.Text = "结束端口号："; // // numericUpDown2 // this.numericUpDown2.Location = new System.Drawing.Point(88, 32); this.numericUpDown2.Maximum = new System.Decimal(new int[] { 65536, 0, 0, 0}); this.numericUpDown2.Name = "numericUpDown2"; this.numericUpDown2.Size = new System.Drawing.Size(72, 21); this.numericUpDown2.TabIndex = 5; this.numericUpDown2.Value = new System.Decimal(new int[] { 50, 0, 0, 0}); // // button1 // this.button1.Location = new System.Drawing.Point(248, 32); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(80, 23); this.button1.TabIndex = 6; this.button1.Text = "开始扫描"; this.button1.Click += new System.EventHandler(this.button1_Click); // // richTextBox1 // this.richTextBox1.Location = new System.Drawing.Point(8, 56); this.richTextBox1.Name = "richTextBox1"; this.richTextBox1.Size = new System.Drawing.Size(320, 168); this.richTextBox1.TabIndex = 7; this.richTextBox1.Text = ""; // // progressBar1 // this.progressBar1.Location = new System.Drawing.Point(8, 224); this.progressBar1.Name = "progressBar1"; this.progressBar1.Size = new System.Drawing.Size(320, 23); this.progressBar1.Step = 1; this.progressBar1.TabIndex = 10; // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); this.ClientSize = new System.Drawing.Size(336, 254); this.Controls.Add(this.progressBar1); this.Controls.Add(this.richTextBox1); this.Controls.Add(this.button1); this.Controls.Add(this.numericUpDown2); this.Controls.Add(this.label3); this.Controls.Add(this.numericUpDown1); this.Controls.Add(this.label2); this.Controls.Add(this.textBox1); this.Controls.Add(this.label1); this.MaximizeBox = false; this.Name = "Form1"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "演示端口扫描"; ((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).EndInit(); ((System.ComponentModel.ISupportInitialize)(this.numericUpDown2)).EndInit(); this.ResumeLayout(false); } #endregion /// <summary> /// 应用程序的主入口点。 /// </summary> [STAThread] static void Main() { Application.Run(new Form1()); } private void button1_Click(object sender, System.EventArgs e) {//扫描端口 int iStart=(int)this.numericUpDown1.Value; int iEnd=(int)this.numericUpDown2.Value; try { this.progressBar1.Minimum=iStart; this.progressBar1.Maximum=iEnd; this.richTextBox1.Text="程序开始扫描端口：\\n"; this.richTextBox1.Update(); for(int i=iStart ;i<iEnd;i++) { this.progressBar1.Value=i; TcpClient MyTCP=null; try { MyTCP = new TcpClient(this.textBox1.Text,i); this.richTextBox1.Text+="端口 " + i.ToString() + " 开放!\n"; this.richTextBox1.Update(); } catch { } } this.richTextBox1.Text+="扫描端口结束！\n"; } catch(Exception Err) { MessageBox.Show("扫描端口操作发生错误，错误信息是："+Err.Message,"信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information); } } } }