Get PC and tablet physical address

  This article mainly describes how to obtain PC and tablet physical address, need friends can refer to the following

Get PC Physical Address     namespace: Using system.management;    code as follows:///<summary> ///get Mac Physical Address  /// </summary> ///<returns></returns>  public string Getmac ()   {  try  {   ManagementObjectSearcher query = new ManagementObjectSearcher ("SELECT * FROM Win32_NetworkAdapterConfiguration" );  managementobjectcollection querycollection = query. Get ();  foreach (ManagementObject mo in querycollection)   {  if (mo["ipenabled"]. ToString () = = "True")   return mo["MacAddress"]. ToString (); }  return ""; }  catch  {  return ""; } }    get flat MAC Address: & nbsp   namespace:    using system.net;  using system.runtime.interopservices;    Add variable:    The code is as follows: protected static string strjavascript = String. empty;  [DllImport ("Iphlpapi.dll")]  private static extern int Sendarp (Int32 dest, Int32 host, ref Int64 Mac, re f Int32 length); &nBsp [DllImport ("Ws2_32.dll")]  private static extern Int32 inet_addr (string IP);      code as follows: private void S Etmac ()   {  try  {  string treatment_id = hid_treatment_id. value;  string mac = string. empty;    String ip = Request.UserHostAddress.ToString (). Trim ();  try  {  mac = Getmac (); }  catch {lbl. innertext = "w33w"; } //mac = "00:01:36:D8:9C:C4"; //LBL. InnerText = Mac + "," + ip;  if (Mac!= "You don't have networking")   {  int iretn = commonws. GetInt ("crrt/pad-login", "Specify a flat MAC address for a treatment patient", new string[] {mac, treatment_id}); }  catch {} . innertext = "WW"; } }    private string Getmac ()   {  string mac = "";  string strclientip = Request.userhosta Ddress. ToString (). Trim ();  Int32 ldest = inet_addr (Strclientip); The destination of the ip  Int32 lhost = inet_addr (""); Local server ip  Int64 macinfo = new Int64 ();  Int32 len = 6;  int res = SENDARP (ldest, 0, ref macinfo, ref len);  mac = Macinfo. ToString ("X");  try  {  string[] Arr_mac = new String[mac. length/2];  int k = 0;  for (int i = Mac. Length; i > 0; i = i-2)   {  arr_mac[k] = Mac. Substring (I-2, 2);  k++; }  mac = "";  foreach (String chars in Arr_mac)   {  mac = chars + ":"; }  mac = Mac. TrimEnd (': '); }  catch {}  return mac;   }