如何通过C＃获取网络打印机的MAC地址？

Question

我想获得一个Intermec条码打印机的标识符，它使用网络接口，所以我想到了MAC地址。我如何通过C＃获取MAC地址？或者我可以直接获得打印机的序列号？

Answer 1

我假设你有网络打印机的IP地址，你的电脑和打印机在同一个本地网络。你可以试试这个程序。

static void Main(string[] args) 
    { 
     PhysicalAddress pa = LocateMacAddress(IPAddress.Parse("172.16.0.99")); 
     Console.WriteLine(pa.ToString()); 
     Console.ReadKey(); 
    } 
    static PhysicalAddress LocateMacAddress(IPAddress ipAddress) 
    { 
     if (ipAddress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) 
     { 
      byte[] macAddressBytes = new byte[6]; 
      int length = macAddressBytes.Length; 
      ArpErrorCodes c = (ArpErrorCodes)SendARP((uint)ipAddress.Address, 0, macAddressBytes, ref length); 
      if (c == ArpErrorCodes.None) 
      { 
       return new PhysicalAddress(macAddressBytes); 
      } 
     } 
     return PhysicalAddress.None; 
    } 

    [DllImport("iphlpapi.dll", ExactSpelling = true)] 
    public static extern int SendARP(uint DestIP, uint SrcIP, [Out] byte[] pMacAddr, ref int PhyAddrLen); 

} 

enum ArpErrorCodes 
{ 
    None = 0, 
    ERROR_GEN_FAILURE = 31, 
    ERROR_NOT_SUPPORTED = 50, 
    ERROR_BAD_NET_NAME = 67, 
    ERROR_BUFFER_OVERFLOW = 111, 
    ERROR_NOT_FOUND = 1168, 
    ERROR_INVALID_USER_BUFFER = 1784, 
}