ASP.NET(C#) ping局域网的其他机子
我想知道哪局域网中哪些机子开了,在.net(c#)中应该怎么写呢
哪位大哥,有源码.最好简单些,我仅仅是想知道哪些能PING通就行了
[解决办法]
可以去Ｃ＃版块问问
[解决办法]
C# 获得局域网主机列表实例
/// 数组初始化
///
private void InitLanHost()
{
LanHost = new string[255,2];
for (int i=0;i <255;i++)
{
LanHost[i,0] = " ";
LanHost[i,1] = " ";
}
}
///
/// 局域网搜索事件
///
private void LanSearch()
{
thread = new Thread[255];
ThreadStart threadMethod;
Thread threadProgress = new Thread(new ThreadStart(progressSearch));
threadProgress.Start();
string localhost = (Dns.GetHostByName(Dns.GetHostName())).AddressList[0].ToString(); //本地主机IP地址
str = localhost.Substring(0,localhost.LastIndexOf( ". "));
for (int i=0;i <255;i++) //建立255个线程扫描IP
{
threadMethod = new ThreadStart(LanSearchThreadMethod);
thread[i] = new Thread(threadMethod);
thread[i].Name = i.ToString();
thread[i].Start();
if (!thread[i].Join(100)) //Thread.Join(100)不知道这处这么用对不对，感觉没什么效果一样
{
thread[i].Abort();
}
}
GetLanHost();
listLanHost();
}
///
/// 多线程搜索方法
///
private void LanSearchThreadMethod()
{
int Currently_i = Convert.ToUInt16(Thread.CurrentThread.Name); //当前进程名称
IPAddress ScanIP = IPAddress.Parse( str + ". "+Convert.ToString(Currently_i +1)); //获得扫描IP地址
IPHostEntry ScanHost = null;
ScanHost = Dns.GetHostByAddress(ScanIP); //获得扫描IP地址主机信息
if (ScanHost != null)
{
LanHost[Currently_i,0] = ScanIP.ToString();
LanHost[Currently_i,1] = ScanHost.HostName;
}
//progressBarSearch.Value = progressBarSearch.Value +1;
}
///
/// 文本框显示主机名与IP列表
///
private void GetLanHost()
{
for (int i=0;i <255;i++)
if ( LanHost[i,0] != " ")
{
textBox1.Text =textBox1.Text + LanHost[i,1] + ": " +LanHost[i,0] + "\r\n ";
}
}
///
/// listview1 显示搜索主机
///
private void listLanHost()
{
listView1.View = View.List;
ListViewItem aa ;
for (int i=0;i <255;i++)
{
if ( LanHost[i,0] != " ")
{
aa= new ListViewItem();
aa.Text = LanHost[i,1];
aa.Tag = LanHost[i,0];
listView1.Items.Add(aa);
}
}
}
///
/// 进度条处理线程
///
private void progressSearch()
{
//label1.Text = "进度条只是时间估计，不是真实搜索进度！ ";
progressBarSearch.Value = 0;
for (int i=0;i <255;i++)
{
progressBarSearch.Value = progressBarSearch.Value + 1;
Thread.Sleep(100);
}
}
}
}
[解决办法]
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.NetworkInformation;
using System.Collections;
using System.Threading;
namespace NetKnocker
{
public partial class Knocker : Form
{
private Thread bgThread = null;
private Thread tmpThread = null;
private ArrayList bgThreads = null;
private Queue IPQueue = null;
private int stoppedThreads = 0;
private Hashtable succeedIPlist = null;
private Hashtable failIPlist = null;
private int max_IP=255;
private int min_IP=0;
private delegate void ShowText(string text);
private ShowText ShowTextDelegate;
private void ShowTextMethod(string text)
{
rtb_Show.AppendText(text);
}
public Knocker()
{
InitializeComponent();
}
private void BgPingThreadMethod()
{
IPAddress ip= (IPAddress)IPQueue.Dequeue();
string tmpip = ip.ToString();
Ping ping = new Ping();
PingReply reply = null;
try
{
reply = ping.Send(ip, 1000);
}
catch (Exception tmpe)
{
failIPlist[tmpip] = tmpe.Message;
}
finally
{
if (reply != null)
if (reply.Status == IPStatus.Success)
succeedIPlist[tmpip]=Dns.GetHostEntry(ip).HostName;
else
failIPlist[tmpip] = reply.Status.ToString();
}
stoppedThreads++;
}
private void BgThreadMethod()
{
string localhostName = Environment.MachineName;
IPAddress ip = Dns.GetHostEntry(localhostName).AddressList[0];
byte [] tmpParts = ip.GetAddressBytes();
string baseIp = tmpParts[0].ToString()+ ". "+tmpParts[1].ToString()+ ". "+tmpParts[2].ToString()+ ". ";
IPAddress tmpip = new IPAddress (0);
for (int i = min_IP; i < max_IP + 1; i++)
{
string tmpstr = baseIp + i.ToString();
tmpip = IPAddress.Parse(tmpstr);
IPQueue.Enqueue(tmpip);
}
for (int i = min_IP; i < max_IP + 1; i++)
{
tmpThread = new Thread(new ThreadStart(BgPingThreadMethod));
tmpThread.IsBackground = true;
tmpThread.Priority = ThreadPriority.BelowNormal;
tmpThread.Start();
bgThreads.Add(tmpThread);
}
while (stoppedThreads != bgThreads.Count)
{
Thread.Sleep(200);
}
if (succeedIPlist.Count > 0)
{
this.Invoke(this.ShowTextDelegate, new object[] { succeedIPlist.Count.ToString()+ " IP addresses can be pinged successfully\n " });
ArrayList tmplist = new ArrayList(succeedIPlist.Keys);
tmplist.Sort();
foreach (string tmpstr in tmplist)
this.Invoke(this.ShowTextDelegate, new object[] { tmpstr + "\t "+succeedIPlist[tmpstr].ToString()+ "\n " });
}
if (failIPlist.Count > 0)
{
this.Invoke(this.ShowTextDelegate, new object[] { "IP addresses can 't be pinged\n "});
ArrayList tmplist = new ArrayList(failIPlist.Keys);
tmplist.Sort();
foreach (string tmpstr in tmplist)
this.Invoke(this.ShowTextDelegate, new object[] { tmpstr + "\t " + failIPlist[tmpstr].ToString() + "\n " });
}
}
private void Knocker_Load(object sender, EventArgs e)
{
ShowTextDelegate = new ShowText(ShowTextMethod);
bgThreads = new ArrayList();
IPQueue = new Queue();
succeedIPlist = new Hashtable();
failIPlist = new Hashtable();
bgThread = new Thread(new ThreadStart(BgThreadMethod));
bgThread.IsBackground = true;
bgThread.Priority = ThreadPriority.BelowNormal;
bgThread.Start();
}
}
}
[解决办法]
namespace NetKnocker
{
partial class Knocker
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name= "disposing "> 如果应释放托管资源，为 true；否则为 false。 </param>
protected override void Dispose(bool disposing)
{
if (disposing && (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.rtb_Show = new System.Windows.Forms.RichTextBox();
this.SuspendLayout();
//
// rtb_Show
//
this.rtb_Show.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.rtb_Show.Location = new System.Drawing.Point(-1, -2);
this.rtb_Show.Name = "rtb_Show ";
this.rtb_Show.Size = new System.Drawing.Size(481, 356);
this.rtb_Show.TabIndex = 0;
this.rtb_Show.Text = " ";
//
// Knocker
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(477, 353);
this.Controls.Add(this.rtb_Show);
this.Name = "Knocker ";
this.Text = "Knocker ";
this.Load += new System.EventHandler(this.Knocker_Load);
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.RichTextBox rtb_Show;
}
}