c# from 窗体代码获取本机Mac地址源码

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.Management;
using System.Net.Sockets; using System.Collections; //using System.ComponentModel;using System.Windows.Forms;using System.Data;        
namespace test {   
 public partial class Form1 : Form    
{      
  public Form1()       
 {           
 InitializeComponent();    
    }        
  private void button1_Click(object sender, EventArgs e)       
 {          
string s="",mac="";                      
string hostInfo = Dns.GetHostName();                         
 System.Net.IPAddress[] addressList = Dns.GetHostByName(Dns.GetHostName()).AddressList;                     
  for (int i = 0; i < addressList.Length; i ++)                
       {             
   s += addressList[i].ToString();                                   }                                            ManagementClass mc;         
  mc=new ManagementClass("Win32_NetworkAdapterConfiguration");                        ManagementObjectCollection moc=mc.GetInstances();                      
foreach(ManagementObject mo in moc)                    
  {         
      if(mo["IPEnabled"].ToString()=="True")                    
            mac=mo["MacAddress"].ToString();         
   this.textBox1.AppendText(mac + "\n\r\n\r");               
      }                 
  this.Text+=hostInfo;        
              this.Text+=s;      
               this.Text+=mac;     
        }   
 }
}

http://wenku.baidu.com/view/131b604469eae009581bec1e.html

你好，如下：
NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();
foreach(NetworkInterface adapter in adapters)
{
BitConberter.ToString(adapter.GetPhysicalAddress().GetAddressBytes()) 返回的就是MAC地址
}