查找接口和ip地址(C#中的arp) [英] find interfaces and ip addresses (arp in C#)
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问题描述
我有一个简单的问题,但是我无法实现,因为C#经验不足.
i have a simple question but im not able to implement it cuz of lack of experience on C#.
当我打开cmd并键入arp -a
命令时,它显示所有接口和ip地址都在路由.
when i open cmd and type arp -a
command, it shows me all interfaces and ip addresses are routing.
所以,我的目标是在C#中实现上述过程并获取ip,mac等... 有人可以帮我解决这个问题吗?我将不胜感激.谢谢
so, my aim is to implement above process in C# and get ip, mac etc... could somebody help me out on this trick? i would greatly appreciate. thanks
推荐答案
Chris Pietschmann 写了一篇关于您要寻找的内容的博客文章.
Chris Pietschmann wrote a blog post on what you're looking for.
它模仿"arp -a"命令.
It mimics the "arp -a" command.
IPInfo类:
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net;
/// <summary>
/// This class allows you to retrieve the IP Address and Host Name for a specific machine on the local network when you only know it's MAC Address.
/// </summary>
public class IPInfo
{
public IPInfo(string macAddress, string ipAddress)
{
this.MacAddress = macAddress;
this.IPAddress = ipAddress;
}
public string MacAddress { get; private set; }
public string IPAddress { get; private set; }
private string _HostName = string.Empty;
public string HostName
{
get
{
if (string.IsNullOrEmpty(this._HostName))
{
try
{
// Retrieve the "Host Name" for this IP Address. This is the "Name" of the machine.
this._HostName = Dns.GetHostEntry(this.IPAddress).HostName;
}
catch
{
this._HostName = string.Empty;
}
}
return this._HostName;
}
}
#region "Static Methods"
/// <summary>
/// Retrieves the IPInfo for the machine on the local network with the specified MAC Address.
/// </summary>
/// <param name="macAddress">The MAC Address of the IPInfo to retrieve.</param>
/// <returns></returns>
public static IPInfo GetIPInfo(string macAddress)
{
var ipinfo = (from ip in IPInfo.GetIPInfo()
where ip.MacAddress.ToLowerInvariant() == macAddress.ToLowerInvariant()
select ip).FirstOrDefault();
return ipinfo;
}
/// <summary>
/// Retrieves the IPInfo for All machines on the local network.
/// </summary>
/// <returns></returns>
public static List<IPInfo> GetIPInfo()
{
try
{
var list = new List<IPInfo>();
foreach (var arp in GetARPResult().Split(new char[] { '\n', '\r' }))
{
// Parse out all the MAC / IP Address combinations
if (!string.IsNullOrEmpty(arp))
{
var pieces = (from piece in arp.Split(new char[] { ' ', '\t' })
where !string.IsNullOrEmpty(piece)
select piece).ToArray();
if (pieces.Length == 3)
{
list.Add(new IPInfo(pieces[1], pieces[0]));
}
}
}
// Return list of IPInfo objects containing MAC / IP Address combinations
return list;
}
catch(Exception ex)
{
throw new Exception("IPInfo: Error Parsing 'arp -a' results", ex);
}
}
/// <summary>
/// This runs the "arp" utility in Windows to retrieve all the MAC / IP Address entries.
/// </summary>
/// <returns></returns>
private static string GetARPResult()
{
Process p = null;
string output = string.Empty;
try
{
p = Process.Start(new ProcessStartInfo("arp", "-a")
{
CreateNoWindow = true,
UseShellExecute = false,
RedirectStandardOutput = true
});
output = p.StandardOutput.ReadToEnd();
p.Close();
}
catch(Exception ex)
{
throw new Exception("IPInfo: Error Retrieving 'arp -a' Results", ex);
}
finally
{
if (p != null)
{
p.Close();
}
}
return output;
}
#endregion
}
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