C＃查本机地址和网段扫描

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Net;
using System.Threading;

namespace WindowsApplication1
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox textBox3;
private System.Windows.Forms.TextBox textBox4;
private System.Windows.Forms.TextBox textBox5;
/// <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 );
}

public static void Main()
{
Application.Run(new Form1());
}
#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.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.textBox2 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.textBox3 = new System.Windows.Forms.TextBox();
this.textBox4 = new System.Windows.Forms.TextBox();
this.textBox5 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(40, 272);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(104, 32);
this.button1.TabIndex = 0;
this.button1.Text = "button1";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(264, 272);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(104, 32);
this.button2.TabIndex = 1;
this.button2.Text = "button2";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(480, 272);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(104, 32);
this.button3.TabIndex = 2;
this.button3.Text = "button3";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(40, 88);
this.textBox1.Multiline = true;
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(544, 64);
this.textBox1.TabIndex = 3;
this.textBox1.Text = "";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(40, 184);
this.textBox2.Multiline = true;
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(544, 56);
this.textBox2.TabIndex = 4;
this.textBox2.Text = "";
//
// label1
//
this.label1.Location = new System.Drawing.Point(40, 24);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(120, 24);
this.label1.TabIndex = 5;
this.label1.Text = "label1";
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(256, 16);
this.textBox3.Name = "textBox3";
this.textBox3.Size = new System.Drawing.Size(176, 21);
this.textBox3.TabIndex = 6;
this.textBox3.Text = "textBox3";
//
// textBox4
//
this.textBox4.Location = new System.Drawing.Point(256, 56);
this.textBox4.Name = "textBox4";
this.textBox4.Size = new System.Drawing.Size(176, 21);
this.textBox4.TabIndex = 7;
this.textBox4.Text = "textBox4";
//
// textBox5
//
this.textBox5.Location = new System.Drawing.Point(464, 56);
this.textBox5.Name = "textBox5";
this.textBox5.Size = new System.Drawing.Size(152, 21);
this.textBox5.TabIndex = 8;
this.textBox5.Text = "textBox5";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(648, 350);
this.Controls.Add(this.textBox5);
this.Controls.Add(this.textBox4);
this.Controls.Add(this.textBox3);
this.Controls.Add(this.label1);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);

}
#endregion

private void Form1_Load(object sender, System.EventArgs e)
{

}
private void button1_Click(object sender, System.EventArgs e)
{
IPHostEntry myHost = new IPHostEntry();
try
{
myHost = Dns.GetHostByName(Dns.GetHostName());
//显示本地主机名
this.textBox2.AppendText(myHost.HostName.ToString());
//显示本地主机的IP地址表
for(int i=0; i < myHost.AddressList.Length; i++)
{
this.textBox2.AppendText("本地主机IP地址->" + myHost.AddressList[i].ToString() + "\r\n");
textBox2.Refresh();
}
}
catch(Exception error)
{
MessageBox.Show(error.Message);
}
}

private void button2_Click(object sender, System.EventArgs e)
{
IPHostEntry myDnsToIP = new IPHostEntry();
myDnsToIP = Dns.Resolve(this.textBox1.Text);
//显示此域名的IP地址的列表
for(int i = 0; i < myDnsToIP.AddressList.Length; i++)
{
this.textBox2.AppendText(this.textBox1.Text + "的IP地址是" + myDnsToIP.AddressList[i].ToString() + "\r\n");
}
}

private void button3_Click(object sender, System.EventArgs e)
{
Thread thScan = new Thread(new ThreadStart(ScanTarget));
thScan.Name="ThreadTest";
thScan.Start();
}

private void ScanTarget()
{
this.button3.Enabled = false;
this.label1.Text = "0";

string strIPAddress = textBox3.Text.ToString();
//开始扫描地址
int nStrat = Int32.Parse(textBox4.Text);
//终止扫描地址
int nEnd = Int32.Parse(textBox5.Text);
//扫描的操作
for(int i = nStrat; i <= nEnd; i++)
{
string strScanIPAdd = strIPAddress + "."+i.ToString();
this.label1.Text = i.ToString();
//转换成IP地址
IPAddress myScanIP = IPAddress.Parse(strScanIPAdd);
try
{
//你可以加入自已的,增强功能
// Dns.GetHostByAddress 方法: 根据 IP 地
//址获取 DNS 主机信息。
IPHostEntry myScanHost = Dns.GetHostByAddress(myScanIP);
//获取主机的名
string strHostName = myScanHost.HostName.ToString();
this.textBox2.AppendText(strScanIPAdd + " -> " + strHostName + "\r\n");
}
catch(Exception error)
{
MessageBox.Show(error.Message);
}
}

this.button3.Enabled = true;
}

}
}