获得MAC地址的四个方法

http://jiezhi.cnblogs.com/archive/2005/07/13/192066.html（转）

１．使用WMI。查询表Win32_NetworkAdapterConfiguration即可获得。

２．使用ARP协议。请看这里。

３．使用Windows命令nbtstat，也就是通过NetBIOS。请看这里。

４．查询SNMP（就是一种用于监视网络设备的协议）的MIB（管理信息数据库）。但这不是一件简单的事情，需要自己创建SNMP包，发送到交换机，然后对返回的响应进行解析。

下面是代碼：

using System;
using System.Diagnostics;
using System.Management;
using System.Net;
using System.Runtime.InteropServices;
using System.Text.RegularExpressions;

namespace MACAddress
{
/**////<summary>
///MainClass的摘要描述。
///</summary>
internalclassMainClass
{
/**////<summary>
///應用程式的主進入點。
///</summary>
[STAThread]
privatestaticvoidMain(string[]args)
{
GetMACByWMI();
IPAddress[]ips=GetLocalIP();
foreach(IPAddressipinips)
{
Console.WriteLine(GetMacByARP(ip.ToString()));
stringmac=GetRemoteMacByNetBIOS(ip.ToString());
if(mac.Length!=0)
Console.WriteLine(mac);
else
Console.WriteLine("FailtogetMACAddressbyNetBIOS");
GetMACBySNMP(ip.ToString(),"yourGroupName@yourVlanNumber");
}
Console.ReadLine();
}

ByWMI#regionByWMI

publicstaticvoidGetMACByWMI()
{
stringquery="selectMACAddressfromWin32_NetworkAdapterConfigurationwhereIPEnabled='TRUE'";
ManagementObjectSearchersearcher=newManagementObjectSearcher(query);
ManagementObjectCollectioncollection=searcher.Get();
foreach(ManagementObjectmoincollection)
{
stringmac=mo["MACAddress"].ToString();
Console.WriteLine("NetworkcardMACAddressis:{0}",mac);
}
}

#endregion

ByARP#regionByARP

[DllImport("Iphlpapi.dll")]
privatestaticexternintSendARP(Int32dest,Int32host,refInt64mac,refInt32length);

[DllImport("Ws2_32.dll")]
privatestaticexternInt32inet_addr(stringip);

publicstaticstringGetMacByARP(stringclientIP)
{
stringip=clientIP;
Int32ldest=inet_addr(ip);
Int64macinfo=newInt64();
Int32len=6;
try
{
SendARP(ldest,0,refmacinfo,reflen);
}
catch
{
return"";
}
stringoriginalMACAddress=Convert.ToString(macinfo,16);
if(originalMACAddress.Length<12)
{
originalMACAddress=originalMACAddress.PadLeft(12,'0');
}
stringmacAddress;
if(originalMACAddress!="0000"&&originalMACAddress.Length==12)
{
stringmac1,mac2,mac3,mac4,mac5,mac6;
mac1=originalMACAddress.Substring(10,2);
mac2=originalMACAddress.Substring(8,2);
mac3=originalMACAddress.Substring(6,2);
mac4=originalMACAddress.Substring(4,2);
mac5=originalMACAddress.Substring(2,2);
mac6=originalMACAddress.Substring(0,2);
macAddress=mac1+"-"+mac2+"-"+mac3+"-"+mac4+"-"+mac5+"-"+mac6;
}
else
{
macAddress="";
}
returnmacAddress.ToUpper();
}

publicstaticIPAddress[]GetLocalIP()
{
stringhostName=Dns.GetHostName();
IPHostEntryipEntry=Dns.GetHostByName(hostName);
returnipEntry.AddressList;
}

#endregion

ByNetBIOS#regionByNetBIOS
publicstaticstringGetRemoteMacByNetBIOS(stringclientIP)
{
stringip=clientIP;
stringdirResults="";
ProcessStartInfopsi=newProcessStartInfo();
Processproc=newProcess();
psi.FileName="nbtstat.exe";
//psi.RedirectStandardInput=false;
psi.RedirectStandardOutput=true;
psi.RedirectStandardError=true;
psi.Arguments="-A"+ip;
psi.UseShellExecute=false;
proc=Process.Start(psi);
dirResults=proc.StandardOutput.ReadToEnd();
stringerror=proc.StandardError.ReadToEnd();
proc.WaitForExit();
dirResults=dirResults.Replace("\r","").Replace("\n","").Replace("\t","");
Regexreg=newRegex("Mac[]{0,}Address[]{0,}=[]{0,}(?((.)*?))__MAC",RegexOptions.IgnoreCase|RegexOptions.Compiled);
Matchmc=reg.Match(dirResults+"__MAC");
if(mc.Success)
{
returnmc.Groups["key"].Value.ToUpper();
}
else
{
return"";
}
}
#endregion

BySNMP#regionBySNMP
publicstaticvoidGetMACBySNMP(stringip,stringvlan)
{
intcommLength,mibLength,dataStart,dataLength;
stringnextMib,value;
SNMPconn=newSNMP();
stringmib="1.3.6.1.2.1.17.4.3.1.1";
intorgMibLength=mib.Length;
byte[]response=newbyte[1024];

nextMib=mib;

while(true)
{
response=conn.Get("getnext",ip,vlan,nextMib);
commLength=Convert.ToInt16(response[6]);
mibLength=Convert.ToInt16(response[23+commLength]);
dataLength=Convert.ToInt16(response[25+commLength+mibLength]);
dataStart=26+commLength+mibLength;
value=BitConverter.ToString(response,dataStart,dataLength);
nextMib=conn.GetNextMIB(response);

if(!(nextMib.Substring(0,orgMibLength)==mib))
{
break;
}
Console.WriteLine("{0}={1}",nextMib,value);

}
}
#endregion
}
}

SNMP Class

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace MACAddress
{
/**//**//**////<summary>
///SNMP的摘要描述。
///</summary>
publicclassSNMP
{
publicSNMP()
{
}

publicbyte[]Get(stringrequest,stringhost,stringcommunity,stringmibString)
{
byte[]packet=newbyte[1024];
byte[]mib=newbyte[1024];
intsnmpLen;
intcomLen=community.Length;
string[]mibVals=mibString.Split('.');
intmibLen=mibVals.Length;
intcnt=0;
inttemp;
intorgmibLen=mibLen;
intpos=0;
for(inti=0;i<orgmibLen;i++)
{
temp=Convert.ToInt16(mibVals[i]);
if(temp>127)

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flex 简要(英)- | .net中获取客户端真实ip

• 2007-09-01 12:10
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