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JWH/EXTENSIONS/ExtensionNetwork.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.NetworkInformation;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JWH
+{
+    
+    public static class ExtensionNetwork
+    {
+
+        /// <summary>
+        /// Get PhysicalAddress (MAC Address)
+        /// </summary>
+        /// <returns></returns>
+        public static string GetPhysicalAddress()
+        {
+
+            List<NetworkInterface> list = new List<NetworkInterface>();
+            foreach(NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
+            {
+                if (nic.OperationalStatus == OperationalStatus.Up)
+                    list.Add(nic);
+            }
+
+            return list[0].GetPhysicalAddress().ToString();
+        }
+
+    }
+
+}