C#中通过IP获取MAC地址，获取本机IP和MAC地址

Love The Way You Lie 2022-10-15 09:57 620阅读 0赞

protected void Page\_Load(object sender, EventArgs e)  
    \{  
        Response.Write("MAC地址为："+GetMACAddress()+"IP地址为："+GetAddress()+"<br>");  
        Response.Write("mac是:" + GetMACByIP("192.168.100.3")+"<br>");  
        Response.Write("mac是:" + GetMACByIP(GetAddress()));  
    \}

//获取本机MAC地址  
    public static string GetMACAddress()  
    \{  
        string MoAddress = "";  
        ManagementClass mc = new ManagementClass("Win32\_NetworkAdapterConfiguration");  
        ManagementObjectCollection moc = mc.GetInstances();  
        foreach (ManagementObject mo in moc)  
        \{  
            if ((bool)mo\["IPEnabled"\] == true)  
                MoAddress = mo\["MacAddress"\].ToString();  
            mo.Dispose();  
        \}  
        return MoAddress;  
    \}

注意：1.使用程序集system.management  
        2.使用命名空间system.management  
          你必须把system.management这个dll引用进你的工程中来。  
          不然的话找不到这个dll，也找不到引用的命名空间和类。  
    //获取本机IP地址  
    public static string GetAddress()  
    \{  
        string strHostName = Dns.GetHostName(); //得到本机的主机名  
        IPHostEntry ipEntry = Dns.GetHostByName(strHostName); //取得本机IP  
        return ipEntry.AddressList\[0\].ToString();    
    \}

\[DllImport("Iphlpapi.dll")\]  
  private static extern int SendARP(Int32 dest,Int32 host,byte\[\] mac,ref Int32 length);  
  \[DllImport("Ws2\_32.dll")\]   
  private static extern Int32 inet\_addr(string ip);

/// <summary>  
  /// 根据ip得到网卡mac地址  
  /// </summary>  
  /// <param name="ip">给出的ip地址</param>  
  /// <returns>对应ip的网卡mac地址</returns>  
  public static string GetMACByIP(string ip)   
  \{   
   try   
   \{   
    byte\[\] aa=new byte\[6\];

Int32 ldest= inet\_addr(ip); //目的地的ip

Int64 macinfo = new Int64();   
    Int32 len = 6;   
    int res = SendARP(ldest,0, aa, ref len);

return BitConverter.ToString( aa, 0, 6 );;  
   \}   
   catch(Exception err)   
   \{   
    throw err;   
   \}