Gets the PHYSICAL address of the pc computer and tablet

Gets the pc physical address

Namespace: using System.Management;

 
/// <summary> 
///  To obtain 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 the mac address of the tablet:

Namespace:

using System.Net;
using System.Runtime.InteropServices;

Add variables:

 
protected static string strJavaScript = string.Empty; 
[DllImport("Iphlpapi.dll")] 
private static extern int SendARP(Int32 dest, Int32 host, ref Int64 mac, ref Int32 length); 
[DllImport("Ws2_32.dll")] 
private static extern Int32 inet_addr(string ip); 

 
private void SetMac() 
{ 
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 are not connected to the Internet ") 
{ 
int iRetn = commonws.GetInt("CRRT/PAD- The login ", " A tablet that specifies a treatment for a patient MAC address ", new string[] { mac, treatment_id }); 
} 
} 
catch { lbl.InnerText = "ww"; } 
} 

private string getMac() 
{ 
string mac = ""; 
string strClientIP = Request.UserHostAddress.ToString().Trim(); 
Int32 ldest = inet_addr(strClientIP); // The destination ip 
Int32 lhost = inet_addr(""); // Local server's 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; 

}