获取本机MAC地址

需添加引用：System.Management.dll

 

         ///   <summary>
         ///  获取本机第一个索引的网卡MAC
         ///   </summary>
         ///   <returns></returns>
         public   string  GetMacAddress()
        {
             string  mac  =   "" ;
            System.Management.ManagementClass mc;
            mc  =   new  System.Management.ManagementClass( " Win32_NetworkAdapterConfiguration " );
            System.Management.ManagementObjectCollection moc  =  mc.GetInstances();
             foreach  (System.Management.ManagementObject mo  in  moc)
            {
                 // 可以使用 mo.GetText(System.Management.TextFormat.Mof); 获取所有值

                 if  (mo[ " IPEnabled " ].ToString().Equals( " True " ))
                {
                     /// /IPSubnet = "255.255.255.255"，可能为拨号连接（MAC一般为:00-53-45-00-00-00）
                     if  (mo[ " IPSubnet " ]  !=   null )
                    {
                         // 记录是否为无效地址
                         bool  isInvalid  =   false ;

                         string [] ipSubnets  =  ( string [])mo[ " IPSubnet " ];
                         foreach  ( string  ipSubnet  in  ipSubnets)
                        {
                             if  (ipSubnet.Equals( " 255.255.255.255 " ))
                            {
                                isInvalid  =   true ;
                                 break ;
                            }
                        }

                         if  ( ! isInvalid)
                        {
                             // 获取第一个MAC
                            mac  =  mo[ " MacAddress " ].ToString();
                             break ;
                        }
                    }                    
                }
            }

             return  mac;
        }