刚好最近在作这方面的事情,我用的方法是SOCKET连接地址列表中的每个终端,然后判断异常类型

解决方案 »

  1.   

    用远程的Socket中的EndPoint来判断.向客户端发送消息,如连通则发送确认信息,服务器端看是否有返回信息即可.
      

  2.   

    private void HostsInit()
    {
    IPHostEntry host=new IPHostEntry();
    for(int i=1;i<=254;i++)
    Dns.BeginGetHostByName("192.168.0."+i,new AsyncCallback(HostsInit),host);
    }

    private void HostsInit(IAsyncResult ar)
    {
    try
    {
    IPHostEntry host=Dns.EndGetHostByName(ar);
    IPHostEntry host1=Dns.GetHostByAddress(host.AddressList[0]); if(host1.HostName.Trim() != Me)//Me是本地计算机
                        cb_host.Items.Add(host1.HostName);//cb_host 是一个CombBox,用于记录局域网中的计算机
    }
    catch{}
    }
      

  3.   

    private void HostsInit()
    {
    IPHostEntry host=new IPHostEntry();
    for(int i=1;i<=254;i++)
    Dns.BeginGetHostByName("192.168.0."+i,new AsyncCallback(HostsInit),host);
    }

    private void HostsInit(IAsyncResult ar)
    {
    try
    {
    IPHostEntry host=Dns.EndGetHostByName(ar);
    IPHostEntry host1=Dns.GetHostByAddress(host.AddressList[0]); if(host1.HostName.Trim() != Me)//Me是本地计算机
                        cb_host.Items.Add(host1.HostName);//cb_host 是一个CombBox,用于记录局域网中的计算机
    }
    catch{}
    }
      

  4.   

    using System;
    using System.Drawing;
    using System.Collections;
    using System.ComponentModel;
    using System.Windows.Forms;
    using System.Data;
    using System.IO;
    using System.Net;
    using System.Threading;namespace WindowsApplication5
    {
    /// <summary>
    /// Summary description for Form1.
    /// </summary>
    public class Form1 : System.Windows.Forms.Form
    {
    private System.Windows.Forms.Button button1;
    private System.Windows.Forms.Button button2;
    private System.Windows.Forms.TextBox textBox2;
    private System.Windows.Forms.RichTextBox richTextBox1;
    private System.Windows.Forms.Label label1;
    private System.Windows.Forms.Button button3;
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.Container components = null; public Form1()
    {
    //
    // Required for Windows Form Designer support
    //
    InitializeComponent(); //
    // TODO: Add any constructor code after InitializeComponent call
    //
    } /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    protected override void Dispose( bool disposing )
    {
    if( disposing )
    {
    if (components != null) 
    {
    components.Dispose();
    }
    }
    base.Dispose( disposing );
    } #region Windows Form Designer generated code
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
    this.button1 = new System.Windows.Forms.Button();
    this.button2 = new System.Windows.Forms.Button();
    this.textBox2 = new System.Windows.Forms.TextBox();
    this.richTextBox1 = new System.Windows.Forms.RichTextBox();
    this.label1 = new System.Windows.Forms.Label();
    this.button3 = new System.Windows.Forms.Button();
    this.SuspendLayout();
    // 
    // button1
    // 
    this.button1.Location = new System.Drawing.Point(8, 16);
    this.button1.Name = "button1";
    this.button1.Size = new System.Drawing.Size(75, 24);
    this.button1.TabIndex = 0;
    this.button1.Text = "本機IP地址";
    this.button1.Click += new System.EventHandler(this.button1_Click);
    // 
    // button2
    // 
    this.button2.Location = new System.Drawing.Point(104, 16);
    this.button2.Name = "button2";
    this.button2.Size = new System.Drawing.Size(75, 24);
    this.button2.TabIndex = 1;
    this.button2.Text = "遠端電腦IP地址";
    this.button2.Click += new System.EventHandler(this.button2_Click);
    // 
    // textBox2
    // 
    this.textBox2.Location = new System.Drawing.Point(112, 64);
    this.textBox2.Name = "textBox2";
    this.textBox2.TabIndex = 3;
    this.textBox2.Text = "";
    this.textBox2.TextChanged += new System.EventHandler(this.textBox2_TextChanged);
    // 
    // richTextBox1
    // 
    this.richTextBox1.Location = new System.Drawing.Point(8, 112);
    this.richTextBox1.Name = "richTextBox1";
    this.richTextBox1.Size = new System.Drawing.Size(248, 160);
    this.richTextBox1.TabIndex = 4;
    this.richTextBox1.Text = "";
    this.richTextBox1.TextChanged += new System.EventHandler(this.richTextBox1_TextChanged);
    // 
    // label1
    // 
    this.label1.Location = new System.Drawing.Point(0, 64);
    this.label1.Name = "label1";
    this.label1.Size = new System.Drawing.Size(100, 16);
    this.label1.TabIndex = 5;
    this.label1.Text = "IP地址:";
    this.label1.TextAlign = System.Drawing.ContentAlignment.TopCenter;
    // 
    // button3
    // 
    this.button3.Location = new System.Drawing.Point(352, 64);
    this.button3.Name = "button3";
    this.button3.TabIndex = 6;
    this.button3.Text = "button3";
    this.button3.Click += new System.EventHandler(this.button3_Click);
    // 
    // Form1
    // 
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 15);
    this.ClientSize = new System.Drawing.Size(544, 317);
    this.Controls.AddRange(new System.Windows.Forms.Control[] {
      this.button3,
      this.label1,
      this.richTextBox1,
      this.textBox2,
      this.button2,
      this.button1});
    this.Name = "Form1";
    this.Text = "Form1";
    this.ResumeLayout(false); }
    #endregion /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main() 
    {
    Application.Run(new Form1());
    } private void button1_Click(object sender, System.EventArgs e)
    {
    IPHostEntry myHost= new IPHostEntry();
    try
    {
    myHost=Dns.GetHostByName(Dns.GetHostName()); for(int i=0;i<myHost.AddressList.Length;i++)
    {
    richTextBox1.AppendText("±??uIPμOO·"+myHost.AddressList[i].ToString()+"\r");
    }
    }
    catch(Exception error)
    {
    MessageBox.Show(error.Message);
    }
    } private void richTextBox1_TextChanged(object sender, System.EventArgs e)
    {

    } private void textBox1_TextChanged(object sender, System.EventArgs e)
    {

    } private void textBox2_TextChanged(object sender, System.EventArgs e)
    {

    } private void button2_Click(object sender, System.EventArgs e)
    {
    IPHostEntry myDnsToIP = new IPHostEntry();
    myDnsToIP = Dns.Resolve(textBox2.Text.ToString());
    for(int i=0;i<myDnsToIP.AddressList.Length;i++)
    {
    richTextBox1.AppendText(textBox2.Text+"μAIPμOO·Ia"+myDnsToIP.AddressList[i].ToString()+"\r");
    } } private void button3_Click(object sender, System.EventArgs e)
    { Thread thScan = new Thread(new ThreadStart(ScanTarget));
    thScan.Start(); }
    private void ScanTarget()
    {
    string strIPAddress= "192.168.100.";
    for(int i=1;i<20;i++)
    {
    string strScanIPAdd = strIPAddress+i.ToString();
    IPAddress myScanIP= IPAddress.Parse(strScanIPAdd);
    try
    {
    IPHostEntry myScanHost = Dns.GetHostByAddress(myScanIP);
    string strHostName= myScanHost.HostName.ToString();
    richTextBox1.AppendText(strScanIPAdd+"->"+strHostName+"\r"); }
    catch(Exception error)
    {
    MessageBox.Show(error.Message);
    }
    } } private void numericUpDown1_ValueChanged(object sender, System.EventArgs e)
    {

    } private void numericUpDown3_ValueChanged(object sender, System.EventArgs e)
    {

    } private void numericUpDown2_ValueChanged(object sender, System.EventArgs e)
    {

    } private void numericUpDown4_ValueChanged(object sender, System.EventArgs e)
    {

    } private void numericUpDown5_ValueChanged(object sender, System.EventArgs e)
    {

    }
    }
    }
      

  5.   

    我记得api里有,你可以查查,这样效率比较高。如果不是win98的机器,也可以用wmi
      

  6.   

    当前的用户名!  這個是難題我也提過類似的問題,見:    http://expert.csdn.net/Expert/topic/2107/2107495.xml?temp=.1838953